Physics Commons^™

Material Damage From Ultrashort Bursts Of Light, Jeremy Gulley

Jeremy R. Gulley

No abstract is currently available.

Chiral Perturbation Theory: An Effective Field Theory, Br Holstein

Barry R Holstein

The concept of an effective field theory (EFT), i.e. a theory which is valid only in a limited range of parameter space, is one which has become highly developed recently. After presenting familiar examples from the realms of classical and quantum mechanics together with condensed matter physics, we show that QCD has an intriguing parallel with superconductivity in that, by using quark–antiquark (mesonic) degrees of freedom and exploiting the symmetries of the theory, a useful and powerful theory–chiral perturbation theory–results, which offers a complete and rigorous description of low energy particle and nuclear physics.

Beam Dynamics In Pt Symmetric Optical Lattices, Konstantinos Makris, Ramy El-Ganainy, Demetrios Christodoulides, Z. Musslimani

Ramy El-Ganainy

The possibility of parity-time (PT) symmetric periodic potentials is investigated within the context of optics. Beam dynamics in this new type of optical structures is examined in detail for both one- and two- dimensional lattice geometries. It is shown that PT periodic structures can exhibit unique characteristics stemming from the nonorthogonality of the associated Floquet-Bloch modes. Some of these features include double refraction, power oscillations, and eigenfunction unfolding as well as nonreciprocal diffraction patterns.

Modeling Plasma Induced Dispersion In A Nonlinear Schrödinger Equation, Jeremy Gulley, William Dennis

Jeremy R. Gulley

Ultrafast laser pulse propagation in dielectrics is often modeled by a modified nonlinear Schrödinger equation (NLSE). At laser intensities sufficient to cause ionization, a plasma term can be included in the modified NLSE to account for free-carrier optical effects. This term is linear in the field and may be calculated from the classical Drude theory. We explore the consequences of a newly developed method for including dispersion relations of the plasma term as predicted by the Drude theory into the framework of the modified NLSE. The plasma induced dispersion terms can be shown to strongly effect ultrashort pulse evolution through …

Solution-Processed Trilayer Inorganic Dielectric For High Performance Flexible Organic Field Effect Transistors, Hs Tan, Sr Kulkarni, T Cahyadi, Ps Lee, Sg Mhaisalkar, J Kasim, Zx Shen, F.R. Zhu

Professor ZHU, Fu Rong

No abstract provided.

Generating Shape Invariant Potentials, Asim Gangopadhyaya

Asim Gangopadhyaya

Heavy-Fermion Superconductivity, Peter Riseborough, George Schmiedeshoff, James Smith

George Schmiedeshoff

Heavy Fermion Superconductivity: A state of the art review of superconductivity in the Heavy Fermion metals is presented. Many important results are given. Theory and experiment are compared and critically discussed