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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8304
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dc.contributor.authorBhattacharjee, Suraka-
dc.contributor.authorMandal, Koushik-
dc.contributor.authorSinha, Supurna-
dc.date.accessioned2024-09-02T04:24:15Z-
dc.date.available2024-09-02T04:24:15Z-
dc.date.issued2024-08-28-
dc.identifier.citationJournal of Physics A: Mathematical and Theoretical, 2024, Vol. 57, p375304en_US
dc.identifier.urihttp://hdl.handle.net/2289/8304-
dc.descriptionOpen Accessen_US
dc.description.abstractThe study of decoherence plays a key role in our understanding of the transition from the quantum to the classical world. Typically, one considers a system coupled to an external bath which forms a model for an open quantum system. While most of the studies pertain to a position coupling between the system and the environment, some involve a momentum coupling, giving rise to an anomalous diffusive model. Here we have gone beyond existing studies and analyzed the non-Markovian master equation, involving the quantum Langevin dynamics of a harmonically oscillating charged Brownian particle in the presence of a magnetic field and coupled to Ohmic (s = 1), sub-Ohmic (s < 1) and super-Ohmic (s > 1) heat baths via both position and momentum couplings. The presence of both position and momentum couplings leads to a stronger interaction with the environment, resulting in a faster loss of coherence compared to a situation where only position coupling is present. The rate of decoherence can be tuned by controlling the relative strengths of the position and momentum coupling parameters. In addition, the magnetic field results in the slowing down of the loss of information from the system, irrespective of the nature of coupling between the system and the bath. A faster decoherence rate is observed for higher values of the Ohmicity parameter 's'. Our results can be experimentally verified by designing a suitable ion trap setup.en_US
dc.language.isoenen_US
dc.publisherIOP Publishing Ltd.en_US
dc.relation.urihttps://arxiv.org/abs/2404.13883en_US
dc.relation.urihttp://dx.doi.org/10.1088/1751-8121/ad707een_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2024arXiv240413883B/abstracten_US
dc.relation.urihttps://inspirehep.net/literature/2779594en_US
dc.rights2024 IOP Publishing Ltden_US
dc.titleDecoherence of a charged Brownian particle in a magnetic field: an analysis of the roles of coupling via position and momentum variablesen_US
dc.typeArticleen_US
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