# The semi-classical energy of open Nambu-Goto strings

Jochen Zahn
May 25, 2016
We compute semi-classical corrections to the energy of rotating Nambu-Goto strings, using methods from quantum field theory on curved space-times. We find that the energy density diverges in a non-integrable way near the boundaries. Regularizing these divergences with boundary counterterms, we find the Regge intercept $a = 1 + \frac{D-2}{24}$ for $D$ dimensional target space.
open access link
@article{Zahn:2016bam, author = "Zahn, Jochen", title = "{The semi-classical energy of open Nambu-Goto strings}", year = "2016", eprint = "1605.07928", archivePrefix = "arXiv", primaryClass = "hep-th", SLACcitation = "%%CITATION = ARXIV:1605.07928;%%" }

Keywords:
locally covariant quantum field theory, string theory