Massless radiation from Strings: quantum spectrum average statistics and cusp-kink configurations

TL;DR

This paper develops formulas to compute average massless radiation spectra from superstring states, identifying states that produce classical-like cusp or kink emissions, with potential implications for cosmic string observations.

Contribution

It introduces general methods for calculating average emission spectra from superstring states and identifies specific states that mimic classical cusp or kink radiation patterns.

Findings

Derived formulas for average massless emission spectra.

Identified superstring states resembling classical cusp/kink emissions.

Statistical counting of states producing classical-like spectra.

Abstract

We derive general formulae for computing the average spectrum for Bosonic or Fermionic massless emission from generic or particular sets of closed superstring quantum states, among the many occurring at a given large value of the number operator. In particular we look for states that can produce a Bosonic spectrum resembling the classical spectrum expected for peculiar cusp-like or kink-like classical configurations, and we perform a statistical counting of their average number. The results can be relevant in the framework of possible observations of the radiation emitted by cosmic strings.