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 (Formula presented) This effect makes a substantial contribution to the total decay rate. © 2001 The American Physical Society.
Registro:
Documento: |
Artículo
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Título: | Vacuum decay in quantum field theory |
Autor: | Calzetta, E.; Verdaguer, E. |
Filiación: | Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina Departament de Física Fonamental, Universitat de Barcelona, Av. Diagonal 647, Barcelona, 08028, Spain
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Año: | 2001
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Volumen: | 64
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Número: | 10
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Página de inicio: | 21
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DOI: |
http://dx.doi.org/10.1103/PhysRevD.64.105008 |
Título revista: | Physical Review D - Particles, Fields, Gravitation and Cosmology
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Título revista abreviado: | Phys Rev D Part Fields Gravit Cosmol
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ISSN: | 15507998
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v64_n10_p21_Calzetta |
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Citas:
---------- APA ----------
Calzetta, E. & Verdaguer, E.
(2001)
. Vacuum decay in quantum field theory. Physical Review D - Particles, Fields, Gravitation and Cosmology, 64(10), 21.
http://dx.doi.org/10.1103/PhysRevD.64.105008---------- CHICAGO ----------
Calzetta, E., Verdaguer, E.
"Vacuum decay in quantum field theory"
. Physical Review D - Particles, Fields, Gravitation and Cosmology 64, no. 10
(2001) : 21.
http://dx.doi.org/10.1103/PhysRevD.64.105008---------- MLA ----------
Calzetta, E., Verdaguer, E.
"Vacuum decay in quantum field theory"
. Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 64, no. 10, 2001, pp. 21.
http://dx.doi.org/10.1103/PhysRevD.64.105008---------- VANCOUVER ----------
Calzetta, E., Verdaguer, E. Vacuum decay in quantum field theory. Phys Rev D Part Fields Gravit Cosmol. 2001;64(10):21.
http://dx.doi.org/10.1103/PhysRevD.64.105008