Strings, Branes and Two-Time Physics

TL;DR

This paper extends Two-Time Physics formalism to strings and p-branes, showing how different gauge choices relate tensionless, rigid, and AdS backgrounds to dual one-time actions.

Contribution

It introduces a generalized formalism for two-time string and p-brane dynamics, revealing gauge fixings that produce dual one-time actions in various backgrounds.

Findings

Gauge fixing relates tensionless and rigid branes in flat spacetime.

Duality between different brane actions under gauge transformations.

Extension of Two-Time Physics to string and p-brane models.

Abstract

We generalize the ideas and formalism of Two-Time Physics from particle dynamics to some specific examples of string and p-brane (p >= 1) dynamics. The two-time string or p-brane action can be gauge fixed to produce various one-time string or p-brane actions that are dual to each other under gauge transformations. We discuss the particular gauges that correspond to tensionless strings and p-branes in flat (d-1)+1 spacetime, rigid strings and p-branes in flat (d-1)+1 spacetime, and tensionless strings and p-branes propagating in the AdS_{d-n} x S^n backgrounds.