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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Quantum versus classical instability of scalar fields in curved backgrounds

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Mendes, Raissa F. P. [1] ; Matsas, George E. A. [1] ; Vanzella, Daniel A. T. [2]
Total Authors: 3
[1] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo - Brazil
[2] Univ Sao Paulo, Inst Fisica Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Physical Review D; v. 89, n. 4 FEB 24 2014.
Web of Science Citations: 12

General-relativistic stable spacetimes can be made unstable under the presence of certain nonminimally coupled free scalar fields. In this paper, we analyze the evolution of linear scalar-field perturbations in spherically symmetric spacetimes and compare the classical stability analysis with a recently discussed quantum field one. In particular, it is shown that vacuum fluctuations lead to natural seeds for the unstable phase, whereas in the classical framework the presence of such seeds in the initial conditions must be assumed. (AU)

FAPESP's process: 11/06429-3 - Quantum field theory in spherically symmetric spacetimes and the vacuum awakening effect
Grantee:Raissa Fernandes Pessoa Mendes
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 07/55449-1 - Physics in curved spacetimes
Grantee:George Emanuel Avraam Matsas
Support type: Research Projects - Thematic Grants