Abstract
We compute semiclassical corrections to the energy of rotating closed Nambu-Goto strings. We confirm the results obtained by means of the Polchinski-Strominger action. We also show that in this semiclassical approximation, the spectrum of physical excitations contains modes that are unphysical nonperturbatively, i.e., to which no physical excitations of the covariantly quantized Nambu-Goto string correspond.
- Received 5 December 2018
DOI:https://doi.org/10.1103/PhysRevD.100.106005
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society