AffiliationUniv Arizona, Dept Math
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationChristoph A Keller and Ida G Zadeh 2020 J. Phys. A: Math. Theor. 53 095401
Rights© 2020 IOP Publishing Ltd
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractWe investigate second order conformal perturbation theory for Z(2) orbifolds of conformal field theories in two dimensions. To evaluate the necessary twisted sector correlation functions and their integrals, we map them from the sphere to its torus double cover. We discuss how this relates crossing symmetry to the modular group, and introduce a regularization scheme on the cover that allows to evaluate the integrals numerically. These methods do not require supersymmetry. As an application, we show that in the torus orbifold of 8 and 16 free bosons, Z(2) twist fields are marginal at first order, but stop being marginal at second order.
Note12 month embargo; published online: 4 February 2020
VersionFinal accepted manuscript