Thermodynamics of String Field Theory Motivated Nonlocal Models

TL;DR

This paper studies the thermodynamic behavior of nonlocal string field theory models, revealing a second order phase transition of tachyons at high temperatures and comparing results with standard scalar theories.

Contribution

It applies perturbative methods to nonlocal string-inspired models to analyze phase transitions and computes the finite temperature effective potential.

Findings

Tachyons undergo a second order phase transition.

The models exhibit distinct thermodynamic properties compared to local scalar theories.

Finite temperature effective potential calculated at one loop.

Abstract

We investigate the thermodynamic properties of the nonlocal tachyon motivated by their nonlocal structure in string field theory. We use previously developed perturbative methods for nonlocal fields to calculate the partition function and the equation of state in the high temperature limit. We find that in these models the tachyons undergo a second order phase transition. We compare our results with those of ordinary scalar field theory. We also calculate the one loop finite temperature effective potential.