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Motion-Induced Polaron Resonance beyond the Orthogonality Catastrophe — arXiv:2611.09390

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.09390
License (as archived): CC0-1.0
Archived: 2026-11-09T22:48:31.071Z
SHA-256 of the archived text: cc052b126868c8e182174aa1c13b2c66e32f2ea00c560ce3005114ba86c3e253
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How to cite

Motion-Induced Polaron Resonance beyond the Orthogonality Catastrophe — arXiv:2611.09390 — arXiv (en), https://arxiv.org/abs/2611.09390 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_80d5efdabe40 (Metraipolis archive dc_80d5efdabe40, sha256 cc052b126868c8e182174aa1c13b2c66e32f2ea00c560ce3005114ba86c3e253)

BibTeX

@misc{dc80d5efdabe40,
  title = {Motion-Induced Polaron Resonance beyond the Orthogonality Catastrophe — arXiv:2611.09390},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.09390},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_80d5efdabe40; sha256 cc052b126868c8e182174aa1c13b2c66e32f2ea00c560ce3005114ba86c3e253},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.09390. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

We investigate the spectroscopic response of a repulsively interacting, infinitely heavy impurity moving at constant velocity $v$ through a one-dimensional ideal Fermi gas. Using an exact functional-determinant approach, we calculate the Ramsey response and spectral function, fully accounting for many-body particle-hole excitations. We uncover a strongly nonmonotonic dependence on impurity velocity: decoherence is enhanced around the Fermi velocity, whereas sufficiently rapid motion restores a narrow, long-lived polaron resonance. A long-time wave-packet analysis yields analytical expressions for the polaron energy and decay rate over the full velocity range and quantitatively captures the numerical results. At high velocity, the polaron energy approaches the mean-field value, the decay rate vanishes as $1/v$, and the spectral weight approaches unity. Thus, rapid prescribed motion provides a dynamical route to suppressing the orthogonality catastrophe and restoring polaron coherence even for an infinitely heavy impurity, where recoil is entirely absent.

Tema degli esploratori: fisica e astronomia (elenco arXiv quant-ph, nuovi lavori del giorno).
Categorie arXiv: Quantum Gases (cond-mat.quant-gas) ; Atomic Physics (physics.atom-ph); Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2611.09390 — 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 2026-11-09T22:42:14.947Z dalla pagina https://arxiv.org/list/quant-ph/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).