Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866914963193331712 |
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| author | Bulgac, A. Kafker, M. Abdurrahman, I. Wlazlowski, G. |
| author_facet | Bulgac, A. Kafker, M. Abdurrahman, I. Wlazlowski, G. |
| contents | 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 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_00926 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization Bulgac, A. Kafker, M. Abdurrahman, I. Wlazlowski, G. Quantum Gases Nuclear Theory 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 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. |
| title | Quantum turbulence, superfluidity, non-Markovian dynamics, and wave function thermalization |
| topic | Quantum Gases Nuclear Theory |
| url | https://arxiv.org/abs/2406.00926 |