The Closed String Tachyon and its relationship with the evolution of the Universe

TL;DR

This paper explores how the classical closed string tachyon influences the universe's evolution, proposing a model where the universe undergoes finite inflation and then collapses, linking string theory with cosmological dynamics.

Contribution

It introduces a cosmological model incorporating the closed string tachyon in a critical bosonic compactification framework, connecting string theory to universe evolution.

Findings

Universe experiences finite inflationary expansion

Collapse occurs as tachyon reaches potential minimum

Model links string theory with cosmological evolution

Abstract

We present a cosmological landscape where the classical closed string tachyon field plays an important role in the framework of a critical bosonic compactification. Our cosmological solutions for a universe with constant curvature describes an finite inflationary stage which expands till a maximum value before undergoes a big crunch as the tachyon reaches the minimum of its potential.