Onset of classical behaviour after a phase transition

We analyze the onset of classical behaviour in a scalar field after a continuous phase transition, in which the system-field, the long wavelength order parameter of the model, interacts with an environment of its own short-wavelength modes. We compute the decoherence time for the system-field modes...

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Autor principal: Lombardo, Fernando César
Publicado: 2005
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01039733_v35_n2B_p397_Rivers
http://hdl.handle.net/20.500.12110/paper_01039733_v35_n2B_p397_Rivers
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01039733_v35_n2B_p397_Rivers
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spelling paper:paper_01039733_v35_n2B_p397_Rivers2023-06-08T15:10:29Z Onset of classical behaviour after a phase transition Lombardo, Fernando César We analyze the onset of classical behaviour in a scalar field after a continuous phase transition, in which the system-field, the long wavelength order parameter of the model, interacts with an environment of its own short-wavelength modes. We compute the decoherence time for the system-field modes from the master equation and compare it with the other time scales of the model. Within our approximations the decoherence time is in general the smallest dynamical time scale. Demanding diagonalisation of the decoherence functional produces identical results. The inclusion of other environmental fields makes diagonalisation occur even earlier. Fil:Lombardo, F.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01039733_v35_n2B_p397_Rivers http://hdl.handle.net/20.500.12110/paper_01039733_v35_n2B_p397_Rivers
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We analyze the onset of classical behaviour in a scalar field after a continuous phase transition, in which the system-field, the long wavelength order parameter of the model, interacts with an environment of its own short-wavelength modes. We compute the decoherence time for the system-field modes from the master equation and compare it with the other time scales of the model. Within our approximations the decoherence time is in general the smallest dynamical time scale. Demanding diagonalisation of the decoherence functional produces identical results. The inclusion of other environmental fields makes diagonalisation occur even earlier.
author Lombardo, Fernando César
spellingShingle Lombardo, Fernando César
Onset of classical behaviour after a phase transition
author_facet Lombardo, Fernando César
author_sort Lombardo, Fernando César
title Onset of classical behaviour after a phase transition
title_short Onset of classical behaviour after a phase transition
title_full Onset of classical behaviour after a phase transition
title_fullStr Onset of classical behaviour after a phase transition
title_full_unstemmed Onset of classical behaviour after a phase transition
title_sort onset of classical behaviour after a phase transition
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01039733_v35_n2B_p397_Rivers
http://hdl.handle.net/20.500.12110/paper_01039733_v35_n2B_p397_Rivers
work_keys_str_mv AT lombardofernandocesar onsetofclassicalbehaviourafteraphasetransition
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