A Stringy Model of Pointlike Particles

TL;DR

This paper extends a supersymmetric preon model to include dark matter, reformulates it within Double Field Theory to address cosmological singularities, and suggests DFT preons as string theory projections.

Contribution

It introduces a string-inspired preon model with a double field theory framework, incorporating dark matter and addressing cosmological singularities.

Findings

DFT preons may approximate pointlike string theory projections

The model incorporates T-duality and doubled Lorentz symmetry

Addresses Big Bang singularity in cosmology

Abstract

A previous supersymmetric preon scenario for visible matter particles is extended to the dark sector. In addition, the scenario is reformulated as a Double Field Theory (DFT) with four extra dimensions, to avoid a singular Big Bang in cosmology. T-duality and doubled local Lorentz symmetry of the model are genuine stringy properties. It is proposed that DFT preons may be an approximate pointlike projection of string theory.