Equations of motion in Double Field Theory: from classical particles to quantum cosmology

TL;DR

This paper explores particle motion in double field theory, deriving geodesic equations in doubled geometry, and proposes a modified quantum cosmology model with two scale factors inspired by these findings.

Contribution

It introduces a geodesic-based description of particle motion in double field theory and proposes a novel quantum cosmology model with dual scale factors.

Findings

Particle motion follows geodesic flow in doubled geometry.

A modified quantum string cosmology model with two scale factors is proposed.

The approach links classical particle dynamics to quantum cosmological models.

Abstract

The equation of motion for a point particle in the background field of double field theory is considered. We find that the motion is described by a geodesic flow in the doubled geometry. Inspired by analysis on the particle motion, we propose a modified model of quantum string cosmology, which includes two scale factors. The report is based on Phys. Rev. D84 (2011) 124049 [arXiv:1108.5795].