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101 papers · 1 filter
Chiral Rashba spin textures in ultra-cold Fermi gases
Jay D. Sau, Rajdeep Sensarma, Stephen Powell +2
Spin-orbit coupling is an important ingredient in many recently discovered phenomena such as the spin-Hall effect and topological insulators. Of particular interest is topological…
Breakdown of the coherent state path integral: two simple examples
Justin H. Wilson, Victor Galitski
We show how the time-continuous coherent state path integral breaks down for both the single-site Bose-Hubbard model and the spin path integral. Specifically, when the Hamiltonian…
Non-Equilibrium Fluctuation-Dissipation Inequality and Non-Equilibrium Uncertainty Principle
C. H. Fleming, B. L. Hu, Albert Roura
The fluctuation-dissipation relation is usually formulated for a system interacting with a heat bath at finite temperature in the context of linear response theory, where only smal…
Nearly-flat bands with nontrivial topology
Kai Sun, Zheng-Cheng Gu, Hosho Katsura +1
We report the theoretical discovery of a large class of 2D tight-binding models containing nearly-flat bands with nonzero Chern numbers. In contrast with previous studies, where no…
Non-Markovian Dynamics and Entanglement of Two-level Atoms in a Common Field
C. H. Fleming, N. I. Cummings, Charis Anastopoulos +1
We derive the stochastic equations and consider the non-Markovian dynamics of a system of multiple two-level atoms in a common quantum field. We make only the dipole approximation…
Quantum-to-Classical Correspondence and Hubbard-Stratonovich Dynamical Systems, a Lie-Algebraic Approach
Victor Galitski
We propose a Lie-algebraic duality approach to analyze non-equilibrium evolution of closed dynamical systems and thermodynamics of interacting quantum lattice models (formulated in…