Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2008-07-26
Phys.Rev.D78:123508,2008
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Latex file, 13 pages, five figures in eps format. Extended discussion, new appendix and added references
Scientific paper
10.1103/PhysRevD.78.123508
We investigate the effects of quantum particle production on a classical sudden singularity occurring at fine time in a Friedmann universe. We use an exact solution to describe an initially radiation-dominated universe that evolves into a sudden singularity at finite time. We calculate the density of created particles exactly and find that it is generally much smaller than the classical background density and pressure which produce the sudden singularity. We conclude that, in the example studied, the quantum particle production does not lead to the avoidance or modification to the sudden future singularity. We argue that the effects of small residual anisotropies in the expansion will not change these results and show how they can be related to studies of classical particle production using a bulk viscosity. We conclude that we do not expect to see significant observable effects from local sudden singularities on our past light cone.
Barrow John D.
Batista Antonio Brasil
Fabris Julio Cesar
Houndjo Stephane
No associations
LandOfFree
Quantum Particle Production at Sudden Singularities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantum Particle Production at Sudden Singularities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Particle Production at Sudden Singularities will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-144540