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DC Field | Value | Language |
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dc.contributor.author | Calzetta, Esteban A., 1958- | cat |
dc.contributor.author | Roura Crumols, Albert | cat |
dc.contributor.author | Verdaguer Oms, Enric, 1950- | cat |
dc.date.accessioned | 2010-05-06T08:34:17Z | - |
dc.date.available | 2010-05-06T08:34:17Z | - |
dc.date.issued | 2001 | cat |
dc.identifier.issn | 0556-2821 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/12320 | - |
dc.description.abstract | We study the contribution to vacuum decay in field theory due to the interaction between the long- and short-wavelength modes of the field. The field model considered consists of a scalar field of mass M with a cubic term in the potential. The dynamics of the long-wavelength modes becomes diffusive in this interaction. The diffusive behavior is described by the reduced Wigner function that characterizes the state of the long-wavelength modes. This function is obtained from the whole Wigner function by integration of the degrees of freedom of the short-wavelength modes. The dynamical equation for the reduced Wigner function becomes a kind of Fokker-Planck equation which is solved with suitable boundary conditions enforcing an initial metastable vacuum state trapped in the potential well. As a result a finite activation rate is found, even at zero temperature, for the formation of true vacuum bubbles of size M-1. This effect makes a substantial contribution to the total decay rate. | eng |
dc.format.extent | 21 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | eng |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.64.105008 | cat |
dc.relation.ispartof | Physical Review D, 2001, vol. 64, núm. 10, p. 105008-1-105008-21 | cat |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevD.64.105008 | - |
dc.rights | (c) The American Physical Society, 2001 | eng |
dc.source | Articles publicats en revistes (Física de la Matèria Condensada) | - |
dc.subject.classification | Teoria quàntica de camps | cat |
dc.subject.classification | Buit | cat |
dc.subject.classification | Efecte túnel | cat |
dc.subject.classification | Sistemes oberts | cat |
dc.subject.other | Quantum field theory | eng |
dc.subject.other | Vacuum | eng |
dc.subject.other | Tunneling (Physics) | eng |
dc.subject.other | Open systems (Physics) | eng |
dc.title | Vacuum decay in quantum field theory | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 193279 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
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193279.pdf | 252.41 kB | Adobe PDF | View/Open |
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