Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization

Bulgac, Aurel; Kafker, Matthew; Abdurrahman, Ibrahim; Wlazłowski, Gabriel

doi:10.1103/PhysRevResearch.6.L042003

Title: Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization

Journal Article · 03 October 2024 · Physical Review Research

DOI: https://doi.org/10.1103/PhysRevResearch.6.L042003 · OSTI ID:2455047

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While quantum turbulence has been addressed both experimentally (predominantly for superfluid ${}^{4}{He}$ and ${}^{3}{He}$ ) and theoretically, the dynamics of various ensembles of quantized vortices has been followed in time only until the vortices have decayed 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 is 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 nonequilibrium evolution can be studied theoretically within a unified theoretical framework. The initial lattice of quantum vortices and antivortices evolves through a couple of vortex tangles and excitation of Kelvin waves, where vortices cross and reconnect, until very slowly thermalization sets in. Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: FG02-97ER41014; AC05-00OR22725; 89233218CNA000001; NA0003841

OSTI ID:: 2455047

Journal Information:: Physical Review Research, Journal Name: Physical Review Research Journal Issue: 4 Vol. 6; ISSN PPRHAI; ISSN 2643-1564

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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