100 citations · 443 across the 15 of their papers we have counts for
14 papers · 1 filter
An Improved Single-Plaquette Gauge Action
Debasish Banerjee, Michael Bögli, Kieran Holland +4
We describe and test a nonperturbatively improved single-plaquette lattice action for 4-d SU(2) and SU(3) pure gauge theory, which suppresses large fluctuations of the plaquette, w…
Non-trivial θ-Vacuum Effects in the 2-d O(3) Model
Michael Bögli, Ferenc Niedermayer, Michele Pepe +1
We study θ-vacua in the 2-d lattice O(3) model using the standard action and an optimized constraint action with very small cut-off effects, combined with the geometric topological…
Linear broadening of the confining string in Yang-Mills theory at low temperature
F. Gliozzi, M. Pepe, U. -J. Wiese
The logarithmic broadening predicted by the systematic low-energy effective field theory for the confining string has recently been verified in numerical simulations of (2+1)-d SU(…
Topological Lattice Actions
W. Bietenholz, U. Gerber, M. Pepe +1
We consider lattice field theories with topological actions, which are invariant against small deformations of the fields. Some of these actions have infinite barriers separating d…
The Width of the Color Flux Tube at 2-Loop Order
F. Gliozzi, M. Pepe, U. -J. Wiese
The color flux tube connecting a static quark-anti-quark pair in Yang-Mills theory supports massless transverse fluctuations, which are the Goldstone bosons of spontaneously broken…
The Width of the Confining String in Yang-Mills Theory
F. Gliozzi, M. Pepe, U. -J. Wiese
We investigate the transverse fluctuations of the confining string connecting two static quarks in (2+1)-d SU(2) Yang-Mills theory using Monte Carlo calculations. The exponentially…
The decay of unstable strings in SU(2) Yang-Mills theory
M. Pepe, U. -J. Wiese
We investigate the stability of strings connecting charges Q in the representation {2Q+1} of SU(2) Yang-Mills theory in (2+1) dimensions. While the fundamental {2}-string between t…
From Decay to Complete Breaking: Pulling the Strings in SU(2) Yang-Mills Theory
M. Pepe, U. -J. Wiese
We study {2Q+1}-strings connecting two static charges Q in (2+1)-d SU(2) Yang-Mills theory. While the fundamental {2}-string between two charges Q = 1/2 is unbreakable, the adjoint…
Study of CP(N-1) θ-Vacua by Cluster-Simulation of SU(N) Quantum Spin Ladders
B. B. Beard, M. Pepe, S. Riederer +1
D-theory provides an alternative lattice regularization of the (1+1)-d CP(N-1) quantum field theory. In this formulation the continuous classical CP(N-1) fields emerge from the dim…
When is the deconfinement phase transition universal?
K. Holland, M. Pepe, U. -J. Wiese
Pure Yang-Mills theory has a finite-temperature phase transition, separating the confined and deconfined bulk phases. Svetitsky and Yaffe conjectured that if this phase transition…
Nonlinear Realization of Chiral Symmetry on the Lattice
S. Chandrasekharan, M. Pepe, F. D. Steffen +1
We formulate lattice theories in which chiral symmetry is realized nonlinearly on the fermion fields. In this framework the fermion mass term does not break chiral symmetry. This p…
Exceptional Confinement in G(2) Gauge Theory
K. Holland, P. Minkowski, M. Pepe +1
We study theories with the exceptional gauge group G(2). The 14 adjoint "gluons" of a G(2) gauge theory transform as {3}, {3bar} and {8} under the subgroup SU(3), and hence have th…
Confinement without a center: the exceptional group G(2)
K. Holland, P. Minkowski, M. Pepe +1
We discuss theories with the exceptional centerless gauge group G(2), paying attention to confinement and the pattern of chiral symmetry breaking. Exploiting the Higgs mechanism to…
Laplacian gauge and instantons
Ph. de Forcrand, M. Pepe
We exhibit the connection between local gauge singularities in the Laplacian gauge and topological charge, which opens the possibility of studying instanton excitations without coo…