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Connection between decoherence and excited state quantum phase transitions

 

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Opened Access Connection between decoherence and excited state quantum phase transitions
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Author: Pérez Fernández, Pedro
Relaño, Armando
Arias Carrasco, José Miguel
Dukelsky, Jorge
García Ramos, José Enrique
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2009
ISBN/ISSN: 978-073540776-3
0094-243X
1551-7616
Document type: Presentation
Abstract: In this work we explore the relationship between an excited state quantum phase transition (ESQPT) and the phenomenon of quantum decoherence. For this purpose, we study how the decoherence is affected by the presence of a continuous ESQPT in the environment. This one is modeled as a two level boson system described by a Lipkin Hamiltonian. We will show that the decoherence of the system is maximal when the environment undergoes a continuous ESQPT.
Size: 263.6Kb
Format: PDF

URI: https://hdl.handle.net/11441/84734

DOI: 10.1063/1.3428940

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Attribution-NonCommercial-NoDerivatives 4.0 Internacional

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