Regular and Periodic Tachyon Kinks

TL;DR

This paper explores stable regular tachyon kinks and periodic kink-antikink configurations in an extended tachyon model, enriching the understanding of tachyon field dynamics and potentially connecting to earlier singular solutions.

Contribution

It introduces an extended tachyon action with additional contributions, leading to new stable regular kink solutions and periodic configurations not previously described.

Findings

Found stable regular tachyon kink solutions.

Discovered periodic kink-antikink arrays under certain conditions.

Extended the tachyon model to include new contributions.

Abstract

We search for regular tachyon kinks in an extended model, which includes the tachyon action recently proposed to describe the tachyon field. The extended model that we propose adds a new contribution to the tachyon action, and seems to enrich the present scenario for the tachyon field. We have found stable tachyon kinks of regular profile, which may appropriately lead to the singular kink found by Sen sometime ago. Also, under specific conditions we may find periodic array of kink-antikink configurations.