Publisher
IOP PUBLISHING LTDCitation
Christoph A Keller and Ida G Zadeh 2020 J. Phys. A: Math. Theor. 53 095401Rights
© 2020 IOP Publishing Ltd.Collection Information
This 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 repository@u.library.arizona.edu.Abstract
We 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.Note
12 month embargo; published online: 4 February 2020ISSN
1751-8113EISSN
1751-8121Version
Final accepted manuscriptae974a485f413a2113503eed53cd6c53
10.1088/1751-8121/ab6b91