Note About Unstable D-Brane with Dynamical Tension

TL;DR

This paper introduces a new action for unstable Dp-branes with dynamical tension, demonstrating its equivalence to established models and analyzing key solutions like the tachyon vacuum.

Contribution

It proposes a novel action for unstable D-branes with dynamical tension and establishes its equivalence with existing DBI and WZ formulations.

Findings

Equivalence of equations of motion with DBI and WZ actions

Hamiltonian formulation derived for the new action

Analysis of solutions at tachyon vacuum and zero tension

Abstract

We propose an action for unstable Dp-brane with dynamical tension. We show that the equations of motion are equivalent to the equations of motion derived from DBI and WZ actions for non-BPS Dp-brane. We also find Hamiltonian formulation of this action and analyze properties of the solutions corresponding to the tachyon vacuum and zero tension solution.