Emission rates, the Correspondence Principle and the Information Paradox

TL;DR

This paper explores how string and brane configurations transition at the correspondence point, affecting emission properties and offering insights into resolving the black hole information paradox.

Contribution

It introduces a detailed analysis of state rearrangements at the correspondence point and their implications for emission matching and the information paradox.

Findings

Rearrangement of branes and strings at the correspondence point.

Different excitation modes dominate at varying couplings.

Potential mechanism for resolving the black hole information paradox.

Abstract

When we vary the moduli of a compactification it may become entropically favourable at some point for a state of branes and strings to rearrange itself into a new configuration. We observe that for the elementary string with two large charges such a rearrangement happens at the `correspondence point' where the string becomes a black hole. For smaller couplings it is entropically favourable for the excitations to be vibrations of the string, while for larger couplings the favoured excitations are pairs of solitonic 5-branes attached to the string; this helps resolve some recently noted difficulties with matching emission properties of the string to emission properties of the black hole. We also examine the change of state when a black hole is placed in a spacetime with an additional compact direction, and the size of this direction is varied. These studies suggest a mechanism that might help resolve the information paradox.