Numerical simulations of a classical discrete anisotropic Landau-Lifshitz magnet reveal a sharp change in the infinite-temperature spin diffusion constant with perturbation strength and a crossover from non-Gaussian to Gaussian magnetization transfer statistics.
Non equilibrium quantum dynamics in ultra-cold quantum gases
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abstract
Advances in controlling and measuring systems of ultra-cold atoms provided strong motivation to theoretical investigations of quantum dynamics in closed many-body systems. Fundamental questions on quantum dynamics and statistical mechanics are now within experimental reach: How is thermalization achieved in a closed quantum system? How does quantum dynamics cross over to effective classical physics? Can such a thermal or classical fate be evaded? In these lectures, given at the Les Houches Summer School of Physics "Strongly Interacting Quantum Systems Out of Equilibrium", I introduce the students to the novel properties that make ultra-cold atomic systems a unique platform for study of non equilibrium quantum dynamics. I review a selection of recent experimental and theoretical work in which universal features and emergent phenomena in quantum dynamics are highlighted.
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2025 2verdicts
UNVERDICTED 2representative citing papers
Periodic modulation of the trap in a unitary Fermi gas excites a dissipationless breathing mode, leading to out-of-phase energy oscillations that follow the dynamic virial theorem.
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Fate of diffusion under integrability breaking of classical integrable magnets
Numerical simulations of a classical discrete anisotropic Landau-Lifshitz magnet reveal a sharp change in the infinite-temperature spin diffusion constant with perturbation strength and a crossover from non-Gaussian to Gaussian magnetization transfer statistics.
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Energy Dynamics of a Nonequilibrium Unitary Fermi Gas
Periodic modulation of the trap in a unitary Fermi gas excites a dissipationless breathing mode, leading to out-of-phase energy oscillations that follow the dynamic virial theorem.