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Abstract:

We consider a quantum scalar field with a λφ4 interaction in curved spacetimes. The quantum effects are taken into account nonperturbatively using the Hartree approximation to the two-particle irreducible effective action. Although this approximation has been considered in many previous works, we reconsider it using a consistent nonperturbative renormalization procedure, which we extend to general curved spacetimes. We obtain the renormalized equations for the mean field and for the propagator of the fluctuations, showing explicitly their independence on the arbitrary scale introduced by the regularization scheme. We apply our results to the particular case of de Sitter spacetime and discuss spontaneous symmetry breaking. The results depend strongly on the renormalization procedure. © 2014 American Physical Society.

Registro:

Documento: Artículo
Título:Hartree approximation in curved spacetimes revisited: The effective potential in de Sitter spacetime
Autor:López Nacir, D.L.; Mazzitelli, F.D.; Trombetta, L.G.
Filiación:Abdus Salam International Centre for Theoretical Physics Strada Costiera 11, 34151 Trieste, Italy
Departamento de Física and IFIBA, FCEyN UBA, Ciudad Universitaria, Pabellón I, 1428 Buenos Aires, Argentina
Centro Atómico Bariloche Comisión Nacional de Energía Atómica, R8402AGP Bariloche, Argentina
Año:2014
Volumen:89
Número:2
DOI: http://dx.doi.org/10.1103/PhysRevD.89.024006
Título revista:Physical Review D - Particles, Fields, Gravitation and Cosmology
Título revista abreviado:Phys Rev D Part Fields Gravit Cosmol
ISSN:15507998
CODEN:PRVDA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n2_p_LopezNacir

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Citas:

---------- APA ----------
López Nacir, D.L., Mazzitelli, F.D. & Trombetta, L.G. (2014) . Hartree approximation in curved spacetimes revisited: The effective potential in de Sitter spacetime. Physical Review D - Particles, Fields, Gravitation and Cosmology, 89(2).
http://dx.doi.org/10.1103/PhysRevD.89.024006
---------- CHICAGO ----------
López Nacir, D.L., Mazzitelli, F.D., Trombetta, L.G. "Hartree approximation in curved spacetimes revisited: The effective potential in de Sitter spacetime" . Physical Review D - Particles, Fields, Gravitation and Cosmology 89, no. 2 (2014).
http://dx.doi.org/10.1103/PhysRevD.89.024006
---------- MLA ----------
López Nacir, D.L., Mazzitelli, F.D., Trombetta, L.G. "Hartree approximation in curved spacetimes revisited: The effective potential in de Sitter spacetime" . Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 89, no. 2, 2014.
http://dx.doi.org/10.1103/PhysRevD.89.024006
---------- VANCOUVER ----------
López Nacir, D.L., Mazzitelli, F.D., Trombetta, L.G. Hartree approximation in curved spacetimes revisited: The effective potential in de Sitter spacetime. Phys Rev D Part Fields Gravit Cosmol. 2014;89(2).
http://dx.doi.org/10.1103/PhysRevD.89.024006