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| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Sociedade Brasileira de Física
2005
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| Accès en ligne: | https://www.redalyc.org/articulo.oa?id=46415793006 |
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- Onset of classical behaviour after a phase transition R. J. Rivers F. C. Lombardo Física, Astronomía y Matemáticas 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 shortwavelength 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. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46415793006 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2B Vol.35