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DC Field | Value | Language |
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dc.contributor.author | Torrents, Jordi | - |
dc.contributor.author | Dunjko, Vanja | - |
dc.contributor.author | Gonchenko, Marina | - |
dc.contributor.author | Astrakharchik, Grigori | - |
dc.contributor.author | Olshanii, Maxim | - |
dc.date.accessioned | 2023-03-01T18:55:30Z | - |
dc.date.available | 2023-03-01T18:55:30Z | - |
dc.date.issued | 2022-03-14 | - |
dc.identifier.issn | 2542-4653 | - |
dc.identifier.uri | http://hdl.handle.net/2445/194406 | - |
dc.description.abstract | We address the origins of the quasi-periodic breathing observed in [Phys. Rev.\ X vol. 9, 021035 (2019)] in disk-shaped harmonically trapped two-dimensional Bose condensates, where the quasi-period $T_{\text{quasi-breathing}}\sim$~$2T/7$ and $T$ is the period of the harmonic trap. We show that, due to an unexplained coincidence, the first instance of the collapse of the hydrodynamic description, at $t^{*} = \arctan(\sqrt{2})/(2\pi) T \approx T/7$, emerges as a `skillful impostor' of the quasi-breathing half-period $T_{\text{quasi-breathing}}/2$. At the time $t^{*}$, the velocity field almost vanishes, supporting the requisite time-reversal invariance. We find that this phenomenon persists for scale-invariant gases in all spatial dimensions, being exact in one dimension and, likely, approximate in all others. In $\bm{d}$ dimensions, the quasi-breathing half-period assumes the form $T_{\text{quasi-breathing}}/2 \equiv t^{*} = \arctan(\sqrt{d})/(2\pi) T$. Remaining unresolved is the origin of the period-$2T$ breathing, reported in the same experiment. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | SciPost Foundation | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.21468/SciPostPhys.12.3.092 | - |
dc.relation.ispartof | SciPost Physics, 2022, vol. 12, num. 092 | - |
dc.relation.uri | https://doi.org/10.21468/SciPostPhys.12.3.092 | - |
dc.rights | cc-by (c) Torrents, Jordi et al., 2022 | - |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | - |
dc.source | Articles publicats en revistes (Matemàtiques i Informàtica) | - |
dc.subject.classification | Pertorbació (Dinàmica quàntica) | - |
dc.subject.classification | Mecànica estadística del no equilibri | - |
dc.subject.classification | Mecànica estadística | - |
dc.subject.classification | Física estadística | - |
dc.subject.other | Perturbation (Quantum dynamics) | - |
dc.subject.other | Nonequilibrium statistical mechanics | - |
dc.subject.other | Statistical mechanics | - |
dc.subject.other | Statistical physics | - |
dc.title | The origin of the period-2T/7 quasi-breathing in disk-shaped Gross-Pitaevskii breathers | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 730959 | - |
dc.date.updated | 2023-03-01T18:55:30Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Matemàtiques i Informàtica) |
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