Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization
Abstract
While quantum turbulence has been addressed both experimentally (predominantly for superfluid He and He) and theoretically, the dynamics of various ensembles of quantized vortices was followed in time only until the vortices decay into phonons. How this ``thermalization'' is achieved is still an unaddressed and thus an unelucidated question. The Unitary Fermi Gas (UFG) is a unique quantum system, which has no classical counterpart and of relevance to neutron stars, cold atoms, condensed matter and nuclear many-body systems. The non-Markovian evolution of an isolated UFG is put in evidence and its entire non-equilibrium evolution can be studied theoretically within a unified theoretical framework. The initial lattice of quantum vortices and anti-vortices evolves through a couple of vortex tangles and excitation of Kelvin waves, where vortices cross and reconnect, until very slowly thermalization sets in.
Cite
@article{arxiv.2406.00926,
title = {Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization},
author = {A. Bulgac and M. Kafker and I. Abdurrahman and G. Wlazlowski},
journal= {arXiv preprint arXiv:2406.00926},
year = {2024}
}
Comments
8 pages, 6 figures, online supplemental material, published version