Heidelberg 2007 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 208: Gittereichtheorie

T 208.5: Vortrag

Dienstag, 6. März 2007, 17:45–18:00, KIP SR 2.403

Fermions in the pseudoparticle approach — •Marc Wagner — Institute for Theoretical Physics III, University of Erlangen, Staudtstraße 7, 91058 Erlangen

The pseudoparticle approach is a numerical technique to compute path integrals without discretizing spacetime. The basic idea is to integrate over those field configurations, which can be represented by a sum of a fixed number of localized building blocks (pseudoparticles). In a couple of previous papers (c.f. e.g. [1]) we have successfully applied the pseudoparticle approach to pure SU(2) Yang-Mills theory. In this talk we discuss how to incorporate fermionic fields in the pseudoparticle approach. To give a simple example, we apply our method to determine the phase diagram of the Gross-Neveu model.

[1] Marc Wagner, “Classes of confining gauge field configurations”, (2006) [arXiv: hep-ph/0608090].