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Full-Text Articles in Physics
Doping A Lattice-Trapped Bosonic Species With Impurities: From Ground State Properties To Correlated Tunneling Dynamics, Kevin Keiler, Simeon I. Mistakidis, Peter Schmelcher
Doping A Lattice-Trapped Bosonic Species With Impurities: From Ground State Properties To Correlated Tunneling Dynamics, Kevin Keiler, Simeon I. Mistakidis, Peter Schmelcher
Physics Faculty Research & Creative Works
We Investigate The Ground State Properties And The Nonequilibrium Dynamics Of A Lattice Trapped Bosonic Mixture Consisting Of An Impurity Species And A Finite-Sized Medium. For The Case Of One As Well As Two Impurities We Observe That, Depending On The Lattice Depth And The Interspecies Interaction Strength, A Transition From A Strongly Delocalized To A Localized Impurity Distribution Occurs. In The Latter Regime The Two Species Phase Separate, Thereby Forming A Particle-Hole Pair. For Two Impurities We Find That Below A Critical Lattice Depth They Are Delocalized Among Two Neighboring Outer Lattice Wells And Are Two-Body Correlated. This Transition …
Nonlinear Dynamics And Dissipation Of A Curvilinear Vortex Driven By A Strong Time-Dependent Meissner Current, W.P.M.R. Pathirana, A. Gurevich
Nonlinear Dynamics And Dissipation Of A Curvilinear Vortex Driven By A Strong Time-Dependent Meissner Current, W.P.M.R. Pathirana, A. Gurevich
Physics Faculty Publications
We report numerical simulations of large-amplitude oscillations of a trapped vortex line under a strong ac magnetic field H(t)=H sinωt parallel to the surface. The power dissipated by an oscillating vortex segment driven by the surface ac Meissner currents was calculated by taking into account the nonlinear vortex line tension, vortex mass, and a nonlinear Larkin-Ovchinnikov (LO) viscous drag coefficient η(v). We show that the LO decrease of η(v) with the vortex velocity v can radically change the field dependence of the surface resistance Ri(H) caused by trapped vortices. At low frequencies, …
Entanglement-Assisted Tunneling Dynamics Of Impurities In A Double Well Immersed In A Bath Of Lattice Trapped Bosons, Friethjof Theel, Kevin Keiler, Simeon I. Mistakidis, Peter Schmelcher
Entanglement-Assisted Tunneling Dynamics Of Impurities In A Double Well Immersed In A Bath Of Lattice Trapped Bosons, Friethjof Theel, Kevin Keiler, Simeon I. Mistakidis, Peter Schmelcher
Physics Faculty Research & Creative Works
We Unravel The Correlated Tunneling Dynamics Of An Impurity Trapped In A Double Well And Interacting Repulsively With A Majority Species Of Lattice Trapped Bosons. Upon Quenching The Tilt Of The Double Well It Is Found That The Quench-Induced Tunneling Dynamics Depends Crucially On The Interspecies Interaction Strength And The Presence Of Entanglement Inherent In The System. In Particular, For Weak Couplings The Impurity Performs A Rather Irregular Tunneling Process In The Double Well. Increasing The Interspecies Coupling It Is Possible To Control The Response Of The Impurity Which Undergoes A Delayed Tunneling While The Majority Species Effectively Acts As …