Thermality versus objectivity : Can they peacefully coexist?
Le, Thao P. (University of Nottingham. School of Mathematical Sciences)
Winter, Andreas (Universitat Autònoma de Barcelona. Departament de Física)
Adesso, Gerardo (University of Nottingham. School of Mathematical Sciences)

Data:	2021
Resum:	Under the influence of external environments, quantum systems can undergo various different processes, including decoherence and equilibration. We observe that macroscopic objects are both objective and thermal, thus leading to the expectation that both objectivity and thermalisation can peacefully coexist on the quantum regime too. Crucially, however, objectivity relies on distributed classical information that could conflict with thermalisation. Here, we examine the overlap between thermal and objective states. We find that in general, one cannot exist when the other is present. However, there are certain regimes where thermality and objectivity are more likely to coexist: in the high temperature limit, at the non-degenerate low temperature limit, and when the environment is large. This is consistent with our experiences that everyday-sized objects can be both thermal and objective.
Ajuts:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1127 Ministerio de Economía y Competitividad FIS2016-86681-P Agencia Estatal de Investigación PID2019-107609GB-I00
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Quantum Darwinism ; Objectivity ; Thermalisation ; Open quantum systems
Publicat a:	Entropy, Vol. 23, Issue 11 (November 2021) , art. 1506, ISSN 1099-4300

DOI: 10.3390/e23111506
PMID: 34828204

20 p, 691.9 KB

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