2012/11/30 by Francesco Benini, Nikolay Bobev · 3 citations
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1103/physrevlett.110.061601
published as Phys.Rev.Lett.110:061601,2013 · 4 pages; v2: minor modifications and refs updated
arxiv created 2013/03/06 · arxiv updated 2013/03/07
We uncover a general principle, dubbed c-extremization, which determines the exact R-symmetry of a two-dimensional unitary superconformal field theory with N=(0,2) supersymmetry. To illustrate its utility, we study superconformal theories obtained by twisted compactifications of four-dimensional N=4 super-Yang-Mills on Riemann surfaces, and construct their gravity duals.