Physics @ Berkeley
Events in Physics
Title: String Theory Seminar (290Z)    (Seminar)
Start Date: 11/06/2012
Time: 3:30 pm
Location: 402 Classroom 4th floor Old LeConte Hall, Campus
Speaker: Francesco Benini
Affiliation: Simons Center
Contact Person: LaVern Navarro   (510) 642-2304
Details:

S2 partition functions: Coulomb vs Higgs localization and vortices


Abstract:

In two-dimensional N=(2,2) R-symmetric theories of vector and chiral multiplets on the two-sphere, the partition function as well as
expectation values of supersymmetric operators can be computed with localization techniques. Depending on the choice of localizing term,
the partion function can be expressed either as integral over the Coulomb branch, or as a sum over a discrete Higgs branch of a vortex
times an antivortex partition functions. As an application, I will show equality of the path integrals for "Seiberg-dual" theories in two
dimensions.