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Cluster simulation of two-dimensional relativistic fermions
Presenter: Ulli Wolff — Humboldt University
Gattringer's loop representation for the Gross Neveu model is rederived emphasizing the role of Majorana fermions and is made exact also for tori of finite physical size. A further transformation to a generalized Ising model – in some sense dual to the original Majorana fermions – allows for the construction of a cluster algorithm. It is demonstrated to be practically free of critical slowing down. In addition the new formulation makes interesting new observables accessible to precise simulations.
© 2006, University of Regensburg, Dept. of Physicscontact: lat07 at physik.uni-regensburg.de