23–28 Jun 2014
Columbia University
US/Eastern timezone

Hadron masses from fixed topological simulations: discussion of parity partners and SU(2) Yang-Mills results.

25 Jun 2014, 12:10
20m
329 Pupin

329 Pupin

Talk Theoretical Developments Theoretical Developments

Speaker

Arthur Dromard (Goethe Universität, Frankfurt am Main)

Description

Lattice QCD simulations tend to become stuck in a single topological sector at fine lattice spacing or when using chirally symmetric overlap quarks. In such cases physical observables differ from their full QCD counterparts by finite volume corrections, which need to be understood on a quantitative level. We discuss extensions of existing relations from the literature between correlation functions at fixed topology and hadron masses at unfixed topology. Particular focus is put on disentangling positive and negative parity states, which mix, when the topological charge is fixed. Numerical results are presented for SU(2) Yang-Mills Theory.

Primary author

Arthur Dromard (Goethe Universität, Frankfurt am Main)

Co-authors

Prof. Christoph Peter Hofmann (Facultad de Ciencias, Universidad de Colima) Mr Christopher Czaban (Goethe university, Frankfurt am main) Mr Hector Mejia-Diaz (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico) Dr Irais Bautista (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico) Dr Lilian Prado (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico) Prof. Marc Wagner (Goethe university, Frankfurt am Main) Dr Urs Gerber (Instituto de Ciencias Nucleares - Universidad Nacional Autonoma de Mexico) Prof. Wolfgang Bietenholz (Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico)

Presentation materials