Digital Commons Network^™

Adsorption Of Helium On A Charged Propeller Molecule: Hexaphenylbenzene, Siegfried Kollotzek, Florent Calvo, Serge Krasnokutski, Fabio Zappa, Paul Scheier, Olof E. Echt

Faculty Publications

Physisorption on planar or curved graphitic surfaces or aromatic rings has been investigated by various research groups, but in these studies the substrate was usually strictly rigid. Here we report a combined experimental and theoretical study of helium adsorption on cationic hexaphenylbenzene (HPB), a propeller-shaped molecule. The orientation of its propeller blades is known to be sensitive to the environment, with substantial differences between the molecule in the gas phase and in the crystalline solid. Mass spectra of He_nHPB⁺, synthesized in helium nanodroplets, indicate enhanced stability for ions containing n = 2, 4, 14, 28, 42, …

Evaluation Of Deep Neural Network Prospr For Accurate Protein Distance Predictions On Casp14 Targets, Jacob A. Stern, Bryce Eric Hedelius, Olivia Fisher, Wendy M. Billings, Dennis Della Corte

Faculty Publications

The field of protein structure prediction has recently been revolutionized through the introduction of deep learning. The current state-of-the-art tool AlphaFold2 can predict highly accurate structures; however, it has a prohibitively long inference time for applications that require the folding of hundreds of sequences. The prediction of protein structure annotations, such as amino acid distances, can be achieved at a higher speed with existing tools, such as the ProSPr network. Here, we report on important updates to the ProSPr network, its performance in the recent Critical Assessment of Techniques for Protein Structure Prediction (CASP14) competition, and an evaluation of its …

Two-Dimensional Steady Boussinesq Convection: Existence, Computation And Scaling, Jeremiah S. Lane, Benjamin F. Akers

Faculty Publications

This research investigates laser-induced convection through a stream function-vorticity formulation. Specifically, this paper considers a solution to the steady Boussinesq Navier–Stokes equations in two dimensions with a slip boundary condition on a finite box. A fixed-point algorithm is introduced in stream function-vorticity variables, followed by a proof of the existence of steady solutions for small laser amplitudes. From this analysis, an asymptotic relationship is demonstrated between the nondimensional fluid parameters and least upper bounds for laser amplitudes that guarantee existence, which accords with numerical results implementing the algorithm in a finite difference scheme. The findings indicate that the upper bound …

To The Side, To The Side: Academic Libraries And Libguides Layout Adoption, Chris Neuhaus, Anne Marie Gruber, Angie Cox, Hyunseung Koh, Jim Kelly, Claire Bowling, Gail Bunz

Faculty Publications

In 2014, Springshare introduced a new LibGuides layout option. In addition to the traditional horizontally-tabbed layout (top navigation), LibGuides designers now have the option of vertically-arrayed tabs on the upper left-hand side of the page (side 10 navigation). Like the university hosting this study, schools have, to varying degrees, shifted their LibGuides toward side navigation and away from top navigation. To better understand the research behind this migration, researchers at the University of Northern Iowa conducted a thorough literature review on navigation menu location preferences and navigation menu efficacy within the field of librarianship and computer science. This review identified …

Association Between Diet Quality Indices And Incidence Of Type 2 Diabetes In The Melbourne Collaborative Cohort Study, Allison M. Hodge, Md Nazmul Karim, James Hébert Scd, Nitin Shivappa Mbbs, Mph, Ph.D., Barbora De Courten

Faculty Publications

Type 2 diabetes mellitus is a common condition whose incidence is increasing worldwide, and for which obesity and diet are important risk factors. The aim of this study was to assess the association of three diet quality scores with diabetes risk and how much of the association was mediated through body size. The Melbourne Collaborative Cohort Study recruited 41,513 men and women aged 40–69 years during 1990–1994. At baseline, data were collected on lifestyle and diet, anthropometric measures were performed. Incident diabetes was assessed by self-report at follow-up surveys in 1994–1998 and 2003–2007. The associations between the dietary inflammatory index …

Precise Measurement Of The D0 And D+ Lifetimes At Belle Ii, F. Abudin´En, I. Adachi, K. Adamczyk, L. Aggarwal, H. Ahmed, H. Aihara, N. Akopov, A. Aloisio, N. Anh Ky, D. M. Asner, H. Atmacan, V. Aushev, V. Babu, S. Bacher, H. Bae, S. Baehr, S. Bahinipati, P. Bambade, Milind Purohit, Et. Al.

Faculty Publications

We report a measurement of the D⁰ and D⁺ lifetimes using D⁰ → K⁻π⁺ and D⁺ → K⁻π⁺π⁺ decays reconstructed in e⁺e⁻ → cc̅ data recorded by the Belle II experiment at the SuperKEKB asymmetricenergy e⁺e⁻ collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb⁻¹. The results, _τ(D⁰) = 410.5 plusmn;1.1_(stat) 0.8(syst) fs and τ(D⁺) = 1030.4 plusmn; 4.7(stat) 3.1(syst) …

Challenges For Estimating The Global Prevalence Of Micronutrient Deficiencies And Related Disease Burden: A Case Study Of The Global Burden Of Disease Study, Sonja Y. Hess, Alexander C. Mclain, Edward A. Frongillo Jr., Ashkan Afshin, Nicholas J. Kassebaum, Saskia J. Osendarp, Reed Atkin, Rahul Rawat, Kenneth H. Brown

Faculty Publications

Information on the prevalence of micronutrient deficiencies is needed to determine related disease burden; underpin evidence-based advocacy; and design, deliver, and monitor safe, effective interventions. Assessing the global prevalence of deficiency requires a valid micronutrient status biomarker with an appropriate cutoff to define deficiency and relevant data from representative surveys across multiple locations and years. The Global Burden of Disease Study includes prevalence estimates for iodine, iron, zinc, and vitamin A deficiencies, for which recommended biomarkers and appropriate deficiency cutoffs exist. Because representative survey data are lacking, only retinol concentration is used to model vitamin A deficiency, and proxy indicators …

Relating Geostationary Satellite Measurements Of Aerosol Optical Depth (Aod) Over East Asia To Fine Particulate Matter (Pm2.5): Insights From The Korus-Aq Aircraft Campaign And Geos-Chem Model Simulations, Shixian Zhai, Daniel J. Jacob, Jared F. Brewer, Ke Li, Jonathan M. Moch, Jhoon Kim, Seoyoung Lee, Hyunkwang Lim, Hyun Chul Lee, Su Keun Kuk, Rokjin J. Park, Jaein I. Jeong, Xuan Wang, Pengfei Liu, Gan Luo, Fangqun Yu, Jun Meng, Randall V. Martin, Katherine R. Travis, Johnathan W. Hair, Bruce E. Anderson, Jack E. Dibb, Jose L. Jimenez, Pedro Campuzano-Jost, Benjamin A. Nault, Jung-Hun Woo, Younha Kim, Qiang Zhang, Hong Liao

Faculty Publications

Geostationary satellite measurements of aerosol optical depth (AOD) over East Asia from the Geostationary Ocean Color Imager (GOCI) and Advanced Himawari Imager (AHI) instruments can augment surface monitoring of fine particulate matter (PM2.5) air quality, but this requires better understanding of the AOD–PM2.5 relationship. Here we use the GEOS-Chem chemical transport model to analyze the critical variables determining the AOD–PM2.5 relationship over East Asia by simulation of observations from satellite, aircraft, and ground-based datasets. This includes the detailed vertical aerosol profiling over South Korea from the KORUS-AQ aircraft campaign (May–June 2016) with concurrent ground-based PM2.5 composition, PM10, and AERONET AOD …

Seasonal Mixed Layer Depth Shapes Phytoplankton Physiology, Viral Production, And Accumulation In The North Atlantic, Ben P. Diaz, Ben Knowles, Christopher T. Johns, Christien P. Laber, Karen Grace V. Bondoc, Liti Haramaty, Frank Natale, Elizabeth L. Harvey, Sasha J. Kramer, Luis M. Bolaños, Daniel P. Lowenstein, Helen F. Fredricks, Jason Graff, Toby K. Westberry, Kristina D. A. Mojica, Nils Haëntjens, Nicholas Baetge, Peter Gaube, Emmanuel Boss, Craig A. Carlson, Michael J. Behrenfeld, Benjamin A. S. Van Mooy, Kay D. Bidle

Faculty Publications

Seasonal shifts in phytoplankton accumulation and loss largely follow changes in mixed layer depth, but the impact of mixed layer depth on cell physiology remains unexplored. Here, we investigate the physiological state of phytoplankton populations associated with distinct bloom phases and mixing regimes in the North Atlantic. Stratification and deep mixing alter community physiology and viral production, effectively shaping accumulation rates. Communities in relatively deep, early-spring mixed layers are characterized by low levels of stress and high accumulation rates, while those in the recently shallowed mixed layers in late-spring have high levels of oxidative stress. Prolonged stratification into early autumn …

Shaper-Pnd Trial: Clinical Effectiveness Protocol Of A Community Singing Intervention For Postnatal Depression, Carolina Estevao, Rebecca Bind, Daisy Fancourt, Kristi Sawyer, Paola Dazzan, Nick Sevdalis, Anthony Woods, Nikki Crane, Lavinia Rebecchini, Katie Hazelgrove, Manonmani Manoharan, Alexandra Burton, Hannah Dye, Tim Osborn, Rachel E. Davis, Tayana Soukup, Jorge Arias De La Torre, Ioannis Bakolis, Andy Healey, Rosie Perkins, Carmine Pariante

Faculty Publications

INTRODUCTION: Postnatal depression (PND) affects approximately 13% of new mothers. Community-based activities are sought after by many mothers, especially mothers that prefer not to access pharmacological or psychological interventions. Singing has shown positive effects in maternal mood and mother-child bonding. The Scaling-Up Health-Arts Programmes: Implementation and Effectiveness Research-Postnatal Depression study will analyse the clinical and implementation effectiveness of 10-week singing sessions for PND in new mothers. This protocol paper will focus on the clinical effectiveness of this trial. METHODS AND ANALYSIS: A total of 400 mothers with PND (with a score of at least 10 on the Edinburgh Postnatal Depression …

Large-Scale Reality Modeling Of A University Campus Using Combined Uav And Terrestrial Photogrammetry For Historical Preservation And Practical Use, Bryce Berrett, Cory Vernon, Haley Beckstrand, Madi Pollei, Kaleb Markert, Kevin Franke, John Hedengren

Faculty Publications

Unmanned aerial vehicles (UAV) enable detailed historical preservation of large-scale infrastructure and contribute to cultural heritage preservation, improved maintenance, public relations, and development planning. Aerial and terrestrial photo data coupled with high accuracy GPS create hyper-realistic mesh and texture models, high resolution point clouds, orthophotos, and digital elevation models (DEMs) that preserve a snapshot of history. A case study is presented of the development of a hyper-realistic 3D model that spans the complex 1.7 km2 area of the Brigham Young University campus in Provo, Utah, USA and includes over 75 significant structures. The model leverages photos obtained during the historic …

Role Of Dissipative Effects In The Quantum Gravitational Onset Of Warm Starobinsky Inflation In A Closed Universe, Meysam Motaharfar, Parampreet Singh

Faculty Publications

A problematic feature of low-energy-scale inflationary models, such as Starobinsky inflation, in a spatially closed universe is the occurrence of a recollapse and a big crunch singularity before inflation can even set in. In a recent work, it was shown that this problem can be successfully resolved in loop quantum cosmology for a large class of initial conditions due to a nonsingular cyclic evolution and a hysteresislike phenomenon. However, for certain highly unfavorable initial conditions, the onset of inflation was still difficult to obtain. In this work, we explore the role of dissipative particle production, which is typical in warm …

An Optimized Machine Learning And Big Data Approach To Crime Detection, Ashokkumar Palanivinayagam, Siva Shankar Gopal, Sweta Bhattacharya, Noble Anumbe, Ebuka Ibeke, Cresantus Biamba

Faculty Publications

Crime detection is one of the most important research applications in machine learning. Identifying and reducing crime rates is crucial to developing a healthy society. Big Data techniques are applied to collect and analyse data: determine the required features and prime attributes that cause the emergence of crime hotspots. The traditional crime detection and machine learning-based algorithms lack the ability to generate key prime attributes from the crime dataset, hence most often fail to predict crime patterns successfully. This paper is aimed at extracting the prime attributes such as time zones, crime probability, and crime hotspots and performing vulnerability analysis …

Apol1 Renal Risk Variants Are Associated With Obesity And Body Composition In African Ancestry Adults: An Observational Genotype-Phenotype Association Study, Girish N. Nadkarni, Kezhen Fei, Genevieve Galarneau, Yan Gao, James G. Wilson, Richard Cooper, Ebony B. Madden, Joshua C. Denny, Lynne D. Richardson, Martin Pollak, Ruth J.F. Loos, Carol R. Horowitz

Faculty Publications

While increased obesity prevalence among persons of African ancestry (AAs) compared to persons of European ancestry (EAs) is linked to social, environmental and behavioral factors, there are no gene variants that are common and significantly associated with obesity in AA populations. We sought to explore the association between ancestry specific renal risk variants in the apolipoprotein L1 (APOL1) gene with obesity related traits in AAs. We conducted a genotype-phenotype association study from 3 electronic medical record linked cohorts (BioMe Biobank, BioVU, nuGENE); randomized controlled trials (genetic testing to understand and address renal disease disparities) and prospective cohort study (Jackson Heart …

Search For Active-Sterile Antineutrino Mixing Using Neutral-Current Interactions With The Nova Experiment, M. A. Acero, P. Adamson, L. Aliaga, N. Anfimov, A. Antoshkin, E. Arrieta-Diaz, L. Asquith, A. Aurisano, A. Back, C. Backhouse, M. Baird, N. Balashov, P. Baldi, B. A. Bambah, S. Bashar, K. Bays, R. Bernstein, B. Bhatnagar, B. Bhuyan, J. Bian, Roberto Petti, Et. Al.

Faculty Publications

This Letter reports results from the first long-baseline search for sterile antineutrinos mixing in an accelerator-based antineutrino-dominated beam. The rate of neutral-current interactions in the two NOvA detectors, at distances of 1 and 810 km from the beam source, is analyzed using an exposure of 12.51×10²⁰ protons-on-target from the NuMI beam at Fermilab running in antineutrino mode. A total of 121 of neutral-current candidates are observed at the far detector, compared to a prediction of 122±11(stat.)±15(syst.) assuming mixing only between three active flavors. No evidence for ⊽ _{μ →} ⊽ _s oscillation is observed. Interpreting this result within a …

Upper And Lower Limb Motor Function Correlates With Ipsilesional Corticospinal Tract And Red Nucleus Structural Integrity In Chronic Stroke: A Cross-Sectional, Roi-Based Mri Study, Denise M. Peters, Julius Fridriksson, Jessica D. Richardson, Jill Campbell Stewart Pt,Phd, Chris Rorden, Leonardo Bonihla, Addie Middleton, Stacy L. Fritz

Faculty Publications

Background. Structural integrity of the ipsilesional corticospinal tract (CST) is important for upper limb motor recovery after stroke. However, additional neuromechanisms associated with motor function poststroke are less well understood, especially regarding the lower limb. Objective. To investigate the neural basis of upper/lower limb motor deficits poststroke by correlating measures of motor function with diffusion tensor imaging-derived indices of white matter integrity (fractional anisotropy (FA), mean diffusivity (MD)) in primary and secondary motor tracts/structures. Methods. Forty-three individuals with chronic stroke (time poststroke, 64.4 ± 58.8 months) underwent a comprehensive motor assessment and MRI scanning. Correlation and multiple …

Athena: A Unique Radiation Environment Platform At The National Ignition Facility, Nicholas J. Quartemont, George Peterson, Colton Moran, Adib J. Samin, Buguo Wang, Charles Yeamans, Brandon Woodworth, Darren Holland, James C. Petrosky, James E. Bevins

Faculty Publications

This paper describes the ATHENA platform, an energy tuning assembly, which was developed to spectrally shape the National Ignition Facility (NIF) deuterium–tritium fusion neutron source to a thermonuclear (fusion) plus prompt fission neutron spectrum with a capability to act as a short-pulse neutron source. This unique, otherwise inaccessible radiation environment complements existing experimental facilities and capabilities. The flexible ATHENA irradiation positions were modeled using an ensemble of Monte Carlo simulations with stochastic sampling of the nuclear cross-sections to characterize the radiation environments and uncertainty for the platform. Validation of the internal neutron spectrum produced from fielding ATHENA at NIF occurred …

Panoramic Spatial Vision In The Bay Scallop Argopecten Irradians, Daniel R. Chappell, Tyler M. Horan, Daniel Isaac Speiser

Faculty Publications

We have a growing understanding of the light-sensing organs and light-influenced behaviours of animals with distributed visual systems, but we have yet to learn how these animals convert visual input into behavioural output. It has been suggested they consolidate visual information early in their sensory-motor pathways, resulting in them being able to detect visual cues (spatial resolution) without being able to locate them (spatial vision). To explore how an animal with dozens of eyes processes visual information, we analysed the responses of the bay scallop Argopecten irradians to both static and rotating visual stimuli. We found A. irradians distinguish between …

Examining Eating Attitudes And Behaviors In Collegiate Athletes, The Association Between Orthorexia Nervosa And Eating Disorders, Nancy A. Uriegas, Zachary K. Winkelmann Phd, Lat, Atc, Kelly Pritchett, Toni Torres-Mcgehee Phd, Lat, Atc

Faculty Publications

Purpose: Orthorexia nervosa (Orthorexia) is an eating attitude and behavior associated with a fixation on healthy eating, while eating disorders (EDs) are clinically diagnosed psychiatric disorders associated with marked disturbances in eating that may cause impairment to psychosocial and physical health. The purpose of this study was to examine risk for Orthorexia and EDs in student-athletes across sex and sport type and determine the association between the two.

Methods: Student-athletes (n = 1,090; age: 19.6 ± 1.4 years; females = 756; males = 334) completed a survey including demographics, the ORTO-15 test (values), the Eating Attitudes Test-26 (EAT-26; >20 …

The Effects Of The Pe Teacher Knowing And Using Student Names In Pe Class: A Qualitative Investigation, David C. Barney, Teresa Leavitt

Faculty Publications

We have each been given a name. With this given name we are known among our families, friends and other associates. Our name becomes an integral part of our identity. A common and important place where a person is addressed by name is in educational school settings, more specifically in a school setting, including in physical education (PE) classes. The physical education setting offers many opportunities for teachers and students to use student names. The purpose of this study was to investigate the use of PE teachers using their student’s given name, along with how it affects students. For this …

Optically Active Selenium Vacancies In Baga4Se7 Crystals, Brian C. Holloway, Timothy D. Gustafson, Christopher A. Lenyk, Nancy C. Giles, Kevin T. Zawilski, Peter G. Schunemann, Kent L. Averett, Larry E. Halliburton

Faculty Publications

Barium gallium selenide (BaGa₄Se₇) is a recently developed nonlinear optical material with a transmission window extending from 470 nm to 17 μm. A primary application of these crystals is the production of tunable mid-infrared laser beams via optical parametric oscillation. Unintentional point defects, such as selenium vacancies, cation vacancies (barium and/or gallium), and trace amounts of transition-metal ions, are present in BaGa₄Se₇ crystals and may adversely affect device performance. Electron paramagnetic resonance (EPR) and optical absorption are used to identify and characterize these defects. Five distinct EPR spectra, each representing an electron …

Differences By School Location In Summer And School Monthly Weight Change: Findings From A Nationally Representative Sample, Ethan T. Hunt, Bridget Armstrong Ph.D., Gabrielle Turner-Mcgrievy Ph.D., Rd, Michael Beets Med, Mph, Phd, Robert Weaver Med, Phd

Faculty Publications

Objectives: To examine changes in accelerations of Body Mass Index (BMI), age-and-sex specific body mass index (zBMI), and 95th percentile of BMI (%BMIp95) during the summer months and school year by school location designation (i.e., urban, suburban, exurban). This study utilized the Early Childhood Longitudinal Study Kindergarten Class of 2010-2011.

Methods: Of the 18,174 children in the ECLS-K:2011 dataset, I restricted participants to those with at least two consecutive measures that occurred August/September or April/May. Mixed-effect regression analyses estimated differences in monthly change in BMI, zBMI, and %BMIp95 between the summer and school year while accounting for the ECLS-K complex …

Language Variation In The Writing Of African American Students: 6 Factors Predicting Reading Achievement, Lisa Fitton Ph.D., Lakeisha Johnson, Carla Wood, Christopher Schatschneider, Sara A. Hart

Faculty Publications

Purpose

This study aims to examine the predictive relation between measures obtained from African American students' written narrative language samples and reading achievement, as measured by standardized academic assessments.

Method

Written language samples were elicited from 207 African American students in Grades 1–8. The samples were examined for morphosyntactic variations from standardized written Generalized American English (GAE). These variations were categorized as either (a) specific to African American English (AAE) or (b) neutral across AAE and standardized written GAE (i.e., considered ungrammatical both in AAE and in standardized written GAE). Structural equation modeling was employed to then examine the predictive …

Impact Of Front-Of-Pack Labels On The Perceived Healthfulness Of A Sweetened Fruit Drink: A Randomised Experiment In Five Countries, Alejandra Jauregui, Christine M. White, Lana Vanderlee, Marissa G. Hall, Alejandra Contreras-Manzano, Claudia Nieto, Gary Sacks, Jim Thrasher Ph.D., Ma, Ms, David Hammond, Simón Barquera

Faculty Publications

Objective: Front-of-pack (FOP) nutrition labelling is a globally recommended strategy to encourage healthier food choices. We evaluated the effect of FOP labels on the perceived healthfulness of a sweetened fruit drink in an international sample of adult consumers.

Design: Six-arm randomised controlled experiment to examine the impact of FOP labels (no label control, Guideline Daily Amounts (GDA), Multiple Traffic Lights, the Health Star Ratings (HSR), Health Warning Labels, and 'High-in' Warning Labels (HIWL)) on the perceived healthfulness of the drink. Linear regression models by country examined healthfulness perceptions on FOP nutrition labels, testing for interactions by demographic characteristics.

Setting: Online …

Cetacean Acousticwelfare In Wild And Managed-Care Settings: Gaps And Opportunities, Paige E. Stevens, Heather Hill, Jason N. Bruck

Faculty Publications

Cetaceans are potentially at risk of poor welfare due to the animals’ natural reliance on sound and the persistent nature of anthropogenic noise, especially in the wild. Industrial, commercial, and recreational human activity has expanded across the seas, resulting in a propagation of sound with varying frequency characteristics. In many countries, current regulations are based on the potential to induce hearing loss; however, a more nuanced approach is needed when shaping regulations, due to other non-hearing loss effects including activation of the stress response, acoustic masking, frequency shifts, alterations in behavior, and decreased foraging. Cetaceans in managedcare settings share the …

One Or None? Truth And Self-Transformation For Śaṅkara And Kamalaśīla, David Fiordalis

Faculty Publications

This article explores how two influential 8th-century Indian philosophers, Śaṅkara and Kamalaśīla, treat the threefold scheme of learning, reasoning, and meditation in their spiritual path philosophies. They have differing institutional and ontological commitments: the former, who helped establish Advaita Vedānta as the religious philosophy of an elite Hindu monastic tradition, affirms an unchanging “self” (ātman) identical to the “world-essence” (brahman); the latter, who played a significant role in the development of Buddhist monasticism in Tibet, denies both self and essence. Yet, they share a concern with questions of truth and the means by which someone could gain access to it, …

"Yogi-Isms" In The Courts, Douglas E. Abrams

Faculty Publications

The versatility of Lawrence Peter (Yogi) Berra, a native of St. Louis,5 appears unparalleled in the annals of professional sports. His stellar on-the-field performance earned him election to the Hall of Fame in 1972, and his vast collection of off-the-field sayings earned him a secure place in American folklore. Some Yogi-isms are cited and quoted in federal and state judicial opinions. Topping the judicial ledger is “It’s déjà vu all over again,” which appears in Shurtleff and a few dozen other decisions.

Weaponizing En Banc, Neal Devins, Allison Orr Larsen

Faculty Publications

The federal courts of appeals embrace the ideal that judges are committed to rule-of-law norms, collegiality, and judicial independence. Whatever else divides them, these judges generally agree that partisan identity has no place on the bench. Consequently, when a court of appeals sits “en banc,” (i.e., collectively) the party affiliations of the three-judge panel under review should not matter. Starting in the 1980s, however, partisan ideology has grown increasingly important in the selection of federal appellate judges. It thus stands to reason—and several high-profile modern examples illustrate—that today’s en banc review could be used as a weapon by whatever party …

Evaluating The Advantage Of Adaptive Strategies For Quantum Channel Distinguishability, Vishal Katariya, Mark M. Wilde

Faculty Publications

Recently, the resource theory of asymmetric distinguishability for quantum strategies was introduced by Wang et al. [Phys. Rev. Research 1, 033169 (2019)2643-156410.1103/PhysRevResearch.1.033169.]. The fundamental objects in the resource theory are pairs of quantum strategies, which are generalizations of quantum channels that provide a framework to describe an arbitrary quantum interaction. In the present paper we provide semidefinite program characterizations of the one-shot operational quantities in this resource theory. We then apply these semidefinite programs to study the advantage conferred by adaptive strategies in discrimination and distinguishability distillation of generalized amplitude damping channels. We find that there are significant gaps between …

Real Space Quantum Cluster Formulation For The Typical Medium Theory Of Anderson Localization, Ka Ming Tam, Hanna Terletska, Tom Berlijn, Liviu Chioncel, Juana Moreno

Faculty Publications

We develop a real space cluster extension of the typical medium theory (cluster-TMT) to study Anderson localization. By construction, the cluster-TMT approach is formally equivalent to the real space cluster extension of the dynamical mean field theory. Applying the developed method to the 3D Anderson model with a box disorder distribution, we demonstrate that cluster-TMT successfully captures the localization phenomena in all disorder regimes. As a function of the cluster size, our method obtains the correct critical disorder strength for the Anderson localization in 3D, and systematically recovers the re-entrance behavior of the mobility edge. From a general perspective, our …