Quantum particle production near the big rip revisited

Abstract

The effect of quantum particle production near the big rip singularity has been investigated previously, with the conclusion that the energy of the produced particle decreases as the future singularity is approached. Hence, the effect of particle production would not be effective to avoid the big rip singularity. That calculation was performed by introducing an ultra-violet cut-off. In the present work we consider a renormalization of the energy-momentum tensor, obtainning a different expression for the particle production. The new expression seems to indicate that the effect of particle production may be dominant as the singularity is approached.

Latex file, 18 pages

References in corpus (5)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Quantum Particle Production at Sudden Singularities
• Particle Production in an expanding universe dominated by dark energy fluid
• Space-Time Description of Scalar Particle Creation by a Homogeneous Isotropic Gravitational Field
• On Particles Creation and Renormalization in a Cosmological Model with a Big Rip

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• Creation of Elko particles in asymptotically expanding universe
• Future singularities if the universe underwent Starobinsky inflation in the past
• Conformal anomaly around the sudden singularity
• Transition between phantom and non-phantom phases with time dependent cosmological constant and Cardy-Verlinde formula
• Particle creation in flat FRW Universe in the framework of $f(T)$ gravity
• Quantum effects from particle production on background evolution and Cardy-Verlinde formula in f(R) gravity