Phase separation can be stronger than chaos
We investigate several dynamical regimes characterizing a bosonic binary mixture loaded in a ring trimer, with particular reference to the persistence of demixing. The degree of phase separation is evaluated by means of the ‘entropy of mixing’, an indicator borrowed from statistical thermodynamics....
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aae73e |
| _version_ | 1797750580579401728 |
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| author | Andrea Richaud Vittorio Penna |
| author_facet | Andrea Richaud Vittorio Penna |
| author_sort | Andrea Richaud |
| collection | DOAJ |
| description | We investigate several dynamical regimes characterizing a bosonic binary mixture loaded in a ring trimer, with particular reference to the persistence of demixing. The degree of phase separation is evaluated by means of the ‘entropy of mixing’, an indicator borrowed from statistical thermodynamics. Three classes of demixed stationary configurations are identified and their energetic and linear stability carefully analyzed. An extended set of trajectories originating in the vicinity of fixed points are explicitly simulated and chaos is shown to arise according to three different mechanisms. In many dynamical regimes, we show that chaos is not able to disrupt the order imposed by phase separation, i.e. boson populations, despite evolving in a chaotic fashion, do not mix. This circumstance can be explained either with energetic considerations or in terms of dynamical restrictions. |
| first_indexed | 2024-03-12T16:35:51Z |
| format | Article |
| id | doaj.art-c720da2c3616409eb91fd3510efcdd86 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:35:51Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-c720da2c3616409eb91fd3510efcdd862023-08-08T14:54:36ZengIOP PublishingNew Journal of Physics1367-26302018-01-01201010500810.1088/1367-2630/aae73ePhase separation can be stronger than chaosAndrea Richaud0https://orcid.org/0000-0001-8940-6936Vittorio Penna1https://orcid.org/0000-0001-5546-8362Dipartimento di Scienza Applicata e Tecnologia and u.d.r. CNISM, Politecnico di Torino , Corso Duca degli Abruzzi 24, I-10129 Torino, ItalyDipartimento di Scienza Applicata e Tecnologia and u.d.r. CNISM, Politecnico di Torino , Corso Duca degli Abruzzi 24, I-10129 Torino, ItalyWe investigate several dynamical regimes characterizing a bosonic binary mixture loaded in a ring trimer, with particular reference to the persistence of demixing. The degree of phase separation is evaluated by means of the ‘entropy of mixing’, an indicator borrowed from statistical thermodynamics. Three classes of demixed stationary configurations are identified and their energetic and linear stability carefully analyzed. An extended set of trajectories originating in the vicinity of fixed points are explicitly simulated and chaos is shown to arise according to three different mechanisms. In many dynamical regimes, we show that chaos is not able to disrupt the order imposed by phase separation, i.e. boson populations, despite evolving in a chaotic fashion, do not mix. This circumstance can be explained either with energetic considerations or in terms of dynamical restrictions.https://doi.org/10.1088/1367-2630/aae73eultracold atomsoptical latticesboson mixturesphase separationchaosentropy of mixing |
| spellingShingle | Andrea Richaud Vittorio Penna Phase separation can be stronger than chaos New Journal of Physics ultracold atoms optical lattices boson mixtures phase separation chaos entropy of mixing |
| title | Phase separation can be stronger than chaos |
| title_full | Phase separation can be stronger than chaos |
| title_fullStr | Phase separation can be stronger than chaos |
| title_full_unstemmed | Phase separation can be stronger than chaos |
| title_short | Phase separation can be stronger than chaos |
| title_sort | phase separation can be stronger than chaos |
| topic | ultracold atoms optical lattices boson mixtures phase separation chaos entropy of mixing |
| url | https://doi.org/10.1088/1367-2630/aae73e |
| work_keys_str_mv | AT andrearichaud phaseseparationcanbestrongerthanchaos AT vittoriopenna phaseseparationcanbestrongerthanchaos |