Brane Decay from the Origin of Time

TL;DR

This paper proposes a new string theory scenario where matter originates from a decaying brane at the universe's beginning, offering a non-singular initial condition and a Big Bang-like event in a time-dependent spacetime.

Contribution

It introduces a novel brane decay model at the origin of time, providing a string-theoretic framework for a non-singular cosmological initial condition.

Findings

Decaying brane acts as a Big Bang-like event.

Time-dependent spacetime with semi-infinite time direction.

Initial energy converts into energy flux from the origin.

Abstract

We present a novel scenario where matter in a spacetime originates from a decaying brane at the origin of time. The decay could be considered as a ``Big Bang''-like event at X^0=0. The closed string interpretation is a time-dependent spacetime with a semi-infinite time direction, with the initial energy of the brane converted into energy flux from the origin. The open string interpretation can be viewed as a string theoretic non-singular initial condition.