1-3 August 2016
Plymouth University
Europe/London timezone
The 14th International workshop on QCD in extreme conditions, Aug. 1-3 2016
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Contribution Talk

Plymouth University - Portland Square
Quantum Field Theories of dense, cold matter

Lattice QED with dual variables

Speakers

  • Helvio VAIRINHOS

Primary authors

Co-authors

Content

With the help of auxiliary fields, it is possible to integrate out analytically the link variables in lattice gauge theory with staggered fermions, for arbitrary values of the lattice coupling. In the case of N_f=1 QED, the subsequent Grassmann integration yields a dual representation of the partition function, which traces over an ensemble of monomers, dimers, and electron loops coupled to the auxiliary fields. We simulate this system using diagrammatic Monte Carlo methods, and explore the residual sign problem which survives after all the analytical integrations.