Features of deSitter Vacua in M-Theory

TL;DR

This paper analyzes the properties of deSitter vacua in M-theory, computing moduli masses and exploring their potential for cosmological inflation or dark energy, revealing limitations and possibilities for fast roll regimes.

Contribution

It provides the first detailed computation of moduli masses in deSitter vacua within M-theory flux compactifications and examines their implications for cosmology.

Findings

Moduli masses are computed for deSitter vacua in M-theory.

Slow-roll parameters are too large for inflation.

Fast roll regimes may explain current dark energy.

Abstract

We compute the masses of all moduli in the unstable deSitter vacua arising in the toy model of cosmological M-theory flux compactifications on the G2 holonomy manifolds of [1]. The slow-roll parameters in the tachyonic directions are shown to be too large to be useful for conventional models of inflation. However, it appears that we can find fast roll regimes which could, under certain conditions, account for the current dark energy driven accelerated expansion of the universe.