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

Luigi Del Debbio; Agostino Patella; Claudio Pica

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

Luigi Del Debbio
, Agostino Patella
, Claudio Pica

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	The XXVI International Symposium on Lattice Field Theory
Subtitle of host publication	PoS(LATTICE 2008)
Pages	064
Number of pages	7
Volume	Applications beyond QCD
Publication status	Published - 2 Dec 2008
Event	XXVI International Symposium on Lattice Field Theory - Williamsburg, VA, United States Duration: 14 Jul 2008 → 19 Jul 2008

Conference

Conference	XXVI International Symposium on Lattice Field Theory
Country/Territory	United States
City	Williamsburg, VA
Period	14/07/08 → 19/07/08

Keywords / Materials (for Non-textual outputs)

hep-lat

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title = "Fermions in higher representations. Some results about SU(2) with adjoint fermions",

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\textasciicircum{}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.",

keywords = "hep-lat",

author = "\{Del Debbio\}, Luigi and Agostino Patella and Claudio Pica",

note = "7 pages, 3 figures. Talk presented at the XXVI International Symposium on Lattice Field Theory, July 14-19, 2008, Williamsburg, VA, USA; XXVI International Symposium on Lattice Field Theory ; Conference date: 14-07-2008 Through 19-07-2008",

year = "2008",

month = dec,

day = "2",

language = "English",

volume = "Applications beyond QCD",

pages = "064",

booktitle = "The XXVI International Symposium on Lattice Field Theory",

}

Del Debbio, L, Patella, A & Pica, C 2008, Fermions in higher representations. Some results about SU(2) with adjoint fermions. in The XXVI International Symposium on Lattice Field Theory: PoS(LATTICE 2008). vol. Applications beyond QCD, pp. 064, XXVI International Symposium on Lattice Field Theory, Williamsburg, VA, United States, 14/07/08. <http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=66>

TY - GEN

T1 - Fermions in higher representations. Some results about SU(2) with adjoint fermions

AU - Del Debbio, Luigi

AU - Patella, Agostino

AU - Pica, Claudio

N1 - 7 pages, 3 figures. Talk presented at the XXVI International Symposium on Lattice Field Theory, July 14-19, 2008, Williamsburg, VA, USA

PY - 2008/12/2

Y1 - 2008/12/2

N2 - 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.

AB - 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.

KW - hep-lat

M3 - Conference contribution

VL - Applications beyond QCD

SP - 064

BT - The XXVI International Symposium on Lattice Field Theory

T2 - XXVI International Symposium on Lattice Field Theory

Y2 - 14 July 2008 through 19 July 2008

ER -

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

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