Metraipolis › archive › dc_143600a2a475

Universal Dynamics of a Spin-$3/2$ Fermi Gas in Traps with Distinct Spectra — arXiv:2609.24211

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.24211
License (as archived): CC0-1.0
Archived: 2026-10-09T22:49:18.898Z
SHA-256 of the archived text: 01ee1677109d6221c3fcc6bddd2222d7f1fc71ac0a3f38405fb81e7ffff1f10e
Stable URL of this page: https://metraipolis.com/documento/dc_143600a2a475

How to cite

Universal Dynamics of a Spin-$3/2$ Fermi Gas in Traps with Distinct Spectra — arXiv:2609.24211 — arXiv (en), https://arxiv.org/abs/2609.24211 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_143600a2a475 (Metraipolis archive dc_143600a2a475, sha256 01ee1677109d6221c3fcc6bddd2222d7f1fc71ac0a3f38405fb81e7ffff1f10e)

BibTeX

@misc{dc143600a2a475,
  title = {Universal Dynamics of a Spin-$3/2$ Fermi Gas in Traps with Distinct Spectra — arXiv:2609.24211},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.24211},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_143600a2a475; sha256 01ee1677109d6221c3fcc6bddd2222d7f1fc71ac0a3f38405fb81e7ffff1f10e},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.24211. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Universal power-law decay of spin-mixing oscillations has been observed in a harmonically trapped spin-$3/2$ Fermi gas, whose exactly equally spaced spectrum represents a highly special case. To gain insight into the origin of this behavior, we investigate the dynamics in traps with increasing and decreasing level spacings, represented by the infinite square well and the Pöschl--Teller potential, respectively. Despite pronounced differences in their single-particle spectra, all systems exhibit power-law decay of coherent oscillations, described by $A(t) = A_{0} - \gamma t^{\alpha}$. The exponent $\alpha$ remains insensitive to particle number, interaction strength, and the overall energy scale, but exhibits systematic differences among traps with distinct spectral structures. In contrast, the decay parameter $\gamma$ is strongly influenced by both the spectral structure and the overall energy scale. These findings demonstrate that power-law decay is not restricted to the harmonic trap but persists across qualitatively distinct spectral structures. The observed variation of $\alpha$ among different traps further suggests that the underlying single-particle spectrum plays an important role in shaping the decay dynamics.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-22 in quant-ph).
Categorie arXiv: Quantum Gases (cond-mat.quant-gas) ; Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2609.24211 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-09T22:25:52.535Z dalla pagina https://arxiv.org/catchup/quant-ph/2026-09-22?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).