Early time hydrodynamic attractor in a nearly-unitary Fermi gas
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866915456436142080 |
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| author | Heller, Michal P. Werthmann, Clemens |
| author_facet | Heller, Michal P. Werthmann, Clemens |
| contents | The hydrodynamic attractors paradigm aims to explain the applicability of hydrodynamics after a very short timescale in ultra-relativistic nuclear collisions at RHIC and LHC in terms of the emergence of universal behavior across different initial states. The attractors observed in theoretical models are first driven by a rapid expansion of matter, which later gives way to the decay of exponentially damped transient excitations into the viscous fluid regime. Recently, a theoretical proposal was made how to realize hydrodynamic attractors in cold atomic gases focusing on the decay of transients and opening prospects for a future experimental realization in table top experiments. Motivated by this, in the present paper we show how the far-from-equilibrium, expansion-driven part of the hydrodynamic attractor emerges in a model of a nearly-unitary Fermi gas. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_02838 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Early time hydrodynamic attractor in a nearly-unitary Fermi gas Heller, Michal P. Werthmann, Clemens High Energy Physics - Theory Quantum Gases High Energy Physics - Phenomenology Nuclear Theory The hydrodynamic attractors paradigm aims to explain the applicability of hydrodynamics after a very short timescale in ultra-relativistic nuclear collisions at RHIC and LHC in terms of the emergence of universal behavior across different initial states. The attractors observed in theoretical models are first driven by a rapid expansion of matter, which later gives way to the decay of exponentially damped transient excitations into the viscous fluid regime. Recently, a theoretical proposal was made how to realize hydrodynamic attractors in cold atomic gases focusing on the decay of transients and opening prospects for a future experimental realization in table top experiments. Motivated by this, in the present paper we show how the far-from-equilibrium, expansion-driven part of the hydrodynamic attractor emerges in a model of a nearly-unitary Fermi gas. |
| title | Early time hydrodynamic attractor in a nearly-unitary Fermi gas |
| topic | High Energy Physics - Theory Quantum Gases High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2507.02838 |