Work

Two-Loop Beta Functions without Feynman Diagrams

Year: 1997

Type: article

Abstract: Starting from a consistency requirement between $T$-duality symmetry and renormalization group flows, the two-loop metric beta function is found for a $d\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2$ bosonic sigma model on a generic, torsionless background. The result is obtained without Feynman diagram calculations, and represents further evidence that duality symmetry severely constrains renormalization flows.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.79.3573

Authors: Peter E. Haagensen, Kasper Olsen, Ricardo Schiappa

Institutions: Massachusetts Institute of Technology, University of Copenhagen

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: U.S. Department of Energy

Award: LABORTORY FOR NUCLEAR SCIENCE (BATES CERN-L3)