Quantum escape of sudden future singularity

By Shin'ichi Nojiri, Sergei D. Odintsov. 2004

298 citations recorded by the source corpus.

We consider finite-time, future (sudden or Big Rip type) singularities which may occur even when strong energy condition is not violated but equation of state parameter is time-dependent. Recently, example of such singularity has been presented by Barrow, we found another example of it. Taking into account back reaction of conformal quantum fields near singularity, it is shown explicitly that quantum effects may delay (or make milder) the singularity. It is argued that if the evolution to singularity is realistic, due to quantum effects the universe may end up in de Sitter phase before scale factor blows up. This picture is generalized for braneworld where sudden singularity may occur on the brane with qualitatively similar conclusions.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/51a0ad0aab38e099b6cf1bea93d74919c9c30460

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

In Statistical and Nonlinear Physics

Francisco S. N. Lobo

Citations in the corpus

Phantom energy traversable wormholes (2005, background): “It was also shown that quantum corrections may prevent [25], or at least delay, the Big Rip by taking into account the back reaction of conformal quantum fields near the singularity [26, 27, 28], and the universe may end up in a deSitter phase before the scale factor blows up.”