Worldsheet instantons and coupling selection rules in heterotic orbifolds
High Energy Physics - Theory
2015-06-18 v1
Abstract
We review recent results on string coupling selection rules for heterotic orbifolds, derived using conformal field theory. Such rules are the first step towards understanding the viability of the recently obtained compactifications with potentially realistic particle spectra. They arise from the properties of the worldsheet instantons that mediate the couplings, and include stringy effects that would seem 'miraculous' to an effective field theory observer.
Cite
@article{arxiv.1401.6162,
title = {Worldsheet instantons and coupling selection rules in heterotic orbifolds},
author = {Susha L. Parameswaran and Ivonne Zavala},
journal= {arXiv preprint arXiv:1401.6162},
year = {2015}
}
Comments
4 pages, talk presented at SQS'13, JINR, Dubna, Russia, 29 July - 03 August, 2013