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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2005
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01039733_v35_n2B_p397_Rivers https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_01039733_v35_n2B_p397_Rivers_oai |
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I28-R145-paper_01039733_v35_n2B_p397_Rivers_oai2024-08-16 Rivers, R.J. Lombardo, F.C. 2005 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. application/pdf http://hdl.handle.net/20.500.12110/paper_01039733_v35_n2B_p397_Rivers info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Braz. J. Phys. 2005;35(2 B):397-402 Onset of classical behaviour after a phase transition info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_01039733_v35_n2B_p397_Rivers_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (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. |
| format |
Artículo Artículo publishedVersion |
| author |
Rivers, R.J. Lombardo, F.C. |
| spellingShingle |
Rivers, R.J. Lombardo, F.C. Onset of classical behaviour after a phase transition |
| author_facet |
Rivers, R.J. Lombardo, F.C. |
| author_sort |
Rivers, R.J. |
| 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 |
http://hdl.handle.net/20.500.12110/paper_01039733_v35_n2B_p397_Rivers https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_01039733_v35_n2B_p397_Rivers_oai |
| work_keys_str_mv |
AT riversrj onsetofclassicalbehaviourafteraphasetransition AT lombardofc onsetofclassicalbehaviourafteraphasetransition |
| _version_ |
1809357212146991104 |