Quantum effects in five-dimensional brane-world: creation of deSitter branes and particles and stabilization of induced cosmological constant

TL;DR

This paper explores quantum effects in five-dimensional brane-world models, focusing on the creation and stabilization of deSitter branes, particle production, and implications for the cosmological constant, with applications to cosmological observations.

Contribution

It introduces a quantum-corrected framework for brane-world cosmology, analyzing brane creation, particle production, and stabilization of the cosmological constant in five-dimensional models.

Findings

Quantum creation of deSitter branes in 5D (A)dS space occurs with CFT contributions.

Particle creation on branes is enhanced by KK modes.

Bulk quantum matter induces an effective potential that can stabilize the cosmological constant.

Abstract

The role of quantum effects in brane-world cosmology is investigated. It is shown in time-independent formulation that quantum creation of deSitter branes in five-dimensional (A)dS bulk occurs with also account of brane quantum CFT contribution. The surface action is chosen to include cosmological constant and curvature term. (The time-dependent formulation of quantum-corrected brane FRW equations is shown to be convenient for comparison with Supernovae data). The particles creation on deSitter brane is estimated and is shown to be increased due to KK modes. The deSitter brane effective potential due to bulk quantum matter on 5d AdS space is found. It may be used to get the observable cosmological constant in the minimum of the potential (stabilization). The appearence of the entropy bounds from bulk field equation is also mentioned.