Quintessence and phantom dark energy from ghost D-branes

TL;DR

This paper proposes a new dark energy model using Ghost D-branes in string theory, which can naturally exhibit quintessence or phantom-like behaviors depending on potential and tension configurations.

Contribution

It introduces a novel dark energy candidate based on Ghost D-branes in warped type IIB string compactifications, highlighting their potential to produce diverse cosmic acceleration behaviors.

Findings

Ghost D-branes cancel BPS sectors while preserving supersymmetry.

The model can naturally produce quintessence or phantom dark energy.

Potential and tension configurations determine the dark energy behavior.

Abstract

We present a novel dark energy candidate, based upon the existence and dynamics of Ghost D-branes in a warped compactification of type IIB string theory. Gp-branes cancel the combined BPS sectors of the Dp-branes, while they preserve the same supersymmetries. We show that this scenario can naturally lead to either quintessence or phantom-like behaviors, depending on the form of the involved potentials and brane tension.