Wightman functions in de Sitter and anti-de Sitter spacetimes in the presence of cosmic string
arXiv:1204.5973 · doi:10.1142/S2010194512008318
Abstract
In this paper we evaluate the Wightman functions associated with a massive quantum scalar field in de Sitter and anti-de Sitter spacetimes in the presence of a cosmic string. Having these functions we calculate the corresponding renormalized vacuum expectation values of the field squared and present the behavior of the contributions induced by the cosmic string as function of the proper distance to it for different values of the parameter which codify the presence of this linear topological defect.
arXiv commentTalk given in the 5th International Workshop on Astronomy and Relativistic Astrophysics (IWARA2011), Joao Pessoa, Brazil, 6-11 Aug 2011
References in corpus (10)
- Cosmology and Brane Worlds: A Review
- Massless Minimally Coupled Fields in De Sitter Space: O(4)-Symmetric States Versus De Sitter Invariant Vacuum
- Quantum effects near a point mass in 2+1 dimensional gravity
- Quantum Scalar Fields on Anti-de Sitter Spacetime
- Vacuum Expectation Value of the Spinor Massive field in the Cosmic String Space-Time
- Scalar field instability in de Sitter space-time
- Massive quantum fields in a conical background
- Euclidean spinor Green's functions in the spacetime of a straight cosmic string
- Vacuum polarization by a cosmic string in de Sitter spacetime
- Vacuum polarization induced by a cosmic string in anti-de Sitter spacetime