String-Net Construction of RCFT Correlators (1st ed. 2022) (SpringerBriefs in Mathematical Physics #45)

Synopsis

This book studies using string-net models to accomplish a direct, purely two-dimensional, approach to correlators of two-dimensional rational conformal field theories. The authors obtain concise geometric expressions for the objects describing bulk and boundary fields in terms of idempotents in the cylinder category of the underlying modular fusion category, comprising more general classes of fields than is standard in the literature. Combining these idempotents with Frobenius graphs on the world sheet yields string nets that form a consistent system of correlators, i.e. a system of invariants under appropriate mapping class groups that are compatible with factorization. The authors extract operator products of field objects from specific correlators; the resulting operator products are natural algebraic expressions that make sense beyond semisimplicity. They also derive an Eckmann-Hilton relation internal to a braided category, thereby demonstrating the utility of string nets for understanding algebra in braided tensor categories. Finally, they introduce the notion of a universal correlator. This systematizes the treatment of situations in which different world sheets have the same correlator and allows for the definition of a more comprehensive mapping class group.

Copyright:

2022

Book Details

Book Quality:

Publisher Quality

ISBN-13:

9783031146824

Related ISBNs:

9783031146817

Publisher:

Springer International Publishing

Date of Addition:

02/02/23

Copyrighted By:

The Author

Adult content:

No

Language:

English

Has Image Descriptions:

No

Categories:

Nonfiction, Science, Earth Sciences, Mathematics and Statistics

Submitted By:

Bookshare Staff

Usage Restrictions:

This is a copyrighted book.