Anomaly Driven Cosmology: Big Boost Scenario and AdS/CFT Correspondence

TL;DR

This paper explores a novel quantum cosmology model where conformal anomalies influence universe evolution, leading to a unique acceleration phase and a big boost singularity, with connections to AdS/CFT and braneworld theories.

Contribution

It introduces a new quantum initial condition model for the universe that incorporates conformal anomalies and reveals a distinctive acceleration mechanism and singularity.

Findings

Conformal anomaly effects screen vacuum Casimir energy from gravity.

The model predicts a rapid acceleration stage before a big boost singularity.

Connections to AdS/CFT correspondence and braneworld scenarios are discussed.

Abstract

We consider the cosmological evolution in a recently suggested new model of quantum initial conditions for the Universe. The effective Friedmann equation incorporates the effect of the conformal anomaly of quantum fields and, interestingly, shows that their vacuum Casimir energy is completely screened and does not gravitate. The cosmological evolution also features a new mechanism for a cosmological acceleration stage. This stage is followed by a big boost singularity -- a rapid growth up to infinity of the scale factor acceleration parameter. We also briefly discuss the relation between our model, the AdS/CFT correspondence and RS and DGP braneworlds.