D-Brane Effective Actions and Particle Production near the Beginning of the Tachyon Condensation

TL;DR

This paper investigates particle production during early tachyon condensation on unstable D-branes, analyzing how different effective actions influence the rate of particle creation in this quantum field theory context.

Contribution

It provides a comparative analysis of particle production rates using various tachyon effective actions during the initial phase of tachyon condensation.

Findings

Particle production rate varies significantly with the choice of effective action.

The rate is highest for certain forms of the effective action.

Results highlight the importance of effective action form in tachyon dynamics.

Abstract

In this paper we will study the quantum field theory of fluctuation modes around the classical solution that describes tachyon condensation on unstable D-brane.We will calculate the number of particle produced near the beginning of the rolling tachyon process. We will perform this calculation for different tachyon effective actions and we will find that the rate of the particle production strongly depends on the form of the effective action used for the description of the early stage of the tachyon condensation.