Fermions in higher representations. Some results about SU(2) with adjoint fermions

Luigi Del Debbio, Agostino Patella, Claudio Pica

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We discuss the lattice formulation of gauge theories with fermions in arbitrary representations of the color group, and present the implementation of the RHMC algorithm for simulating dynamical Wilson fermions. A first dataset is presented for the SU(2) gauge theory with two fermions in the adjoint representation, which has been proposed as a possible technicolor candidate. Simulations are performed on 8^3x16 lattices, at fixed lattice spacing. The PCAC mass, the pseudoscalar, vector and axial meson masses, the pseudoscalar meson decay constant are computed. The extrapolation to the chiral limit is discussed. However more extensive investigations are needed in order to control the systematic errors in the numerical results, and then understand in detail the phase structure of these theories.
Original languageEnglish
Title of host publicationThe XXVI International Symposium on Lattice Field Theory
Subtitle of host publicationPoS(LATTICE 2008)
Pages064
Number of pages7
VolumeApplications beyond QCD
Publication statusPublished - 2 Dec 2008
EventXXVI International Symposium on Lattice Field Theory - Williamsburg, VA, United States
Duration: 14 Jul 200819 Jul 2008

Conference

ConferenceXXVI International Symposium on Lattice Field Theory
CountryUnited States
CityWilliamsburg, VA
Period14/07/0819/07/08

Keywords

  • hep-lat

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