Quantum transport in strongly correlated Fermi gases
Transport in strongly correlated fermions cannot be understood by fermionic quasiparticles alone. We present a theoretical framework for quantum transport that incorporates strong local correlations of fermion pairs. These contact correlations add essential contributions to viscous, thermal and soun...
Saved in:
| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
11 Feb 2025
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| In: |
Comptes rendus physique
Year: 2025, Volume: 26, Issue: G1, Pages: 217-224 |
| ISSN: | 1878-1535 |
| DOI: | 10.5802/crphys.237 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.5802/crphys.237 Verlag, kostenfrei, Volltext: https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.41/ 
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| Author Notes: | Tilman Enss |
MARC
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| 520 | |a Transport in strongly correlated fermions cannot be understood by fermionic quasiparticles alone. We present a theoretical framework for quantum transport that incorporates strong local correlations of fermion pairs. These contact correlations add essential contributions to viscous, thermal and sound transport coefficients. The bulk viscosity, in particular, receives its dominant contribution from pair excitations. Moreover, it can be measured elegantly by observing the response to a time-dependent scattering length even when the fluid is not moving. Rapid changes of the scattering length drive the system far out of local equilibrium, and we show how it relaxes back to equilibrium following a hydrodynamic attractor before a Navier-Stokes description becomes valid. | ||
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