113 citations · 433 across the 19 of their papers we have counts for
10 papers · 1 filter
RHMC with Block Solvers and Multiple Pseudofermions
Philippe de Forcrand, Liam Keegan
The dominant cost of most lattice QCD simulations is the inversion of the Dirac operator required to calculate the force term in the RHMC update. One way to improve this situation…
`t Hooft model on the Lattice
Margarita García Pérez, Antonio González-Arroyo, Liam Keegan +1
Lattice results are presented for the meson spectrum of 1+1 dimensional gauge theory at large , using the Twisted Eguchi-Kawai model. Comparison is made to the results obtained…
(Dimensional) twisted reduction in large N gauge theories
Liam Keegan, Alberto Ramos
We show that the spontaneous breaking of center symmetry can be avoided on a lattice with the appropriate choice of twisted boundary conditions. In order for this t…
Schwinger Model Mass Anomalous Dimension
Liam Keegan
The mass anomalous dimension for several gauge theories with an infrared fixed point has recently been determined using the mode number of the Dirac operator. In order to better un…
Mass anomalous dimension of Adjoint QCD at large N from twisted volume reduction
Margarita García Pérez, Antonio González-Arroyo, Liam Keegan +1
In this work we consider the gauge theory with two Dirac fermions in the adjoint representation, in the limit of large . In this limit the infinite-volume physics of thi…
A comparison of updating algorithms for large N reduced models
Margarita García Pérez, Antonio González-Arroyo, Liam Keegan +2
We investigate Monte Carlo updating algorithms for simulating Yang-Mills fields on a single-site lattice, such as for the Twisted Eguchi-Kawai model (TEK). We show that per…
The twisted gradient flow running coupling
Margarita García Pérez, Antonio González-Arroyo, Liam Keegan +1
We measure the running of the 't Hooft coupling by performing a step scaling analysis of the Twisted Eguchi-Kawai (TEK) model, the SU() gauge theory on a single sit…
TEK twisted gradient flow running coupling
Margarita García Pérez, Antonio González-Arroyo, Liam Keegan +1
We measure the running of the twisted gradient flow coupling in the Twisted Eguchi-Kawai (TEK) model, the SU(N) gauge theory on a single site lattice with twisted boundary conditio…
Anomalous dimensions of four-fermion operators from conformal EWSB dynamics
Luigi Del Debbio, Liam Keegan, Carlos Pena
(Quasi)conformal scaling of composite operators from a strongly coupled EWSB dynamics helps to produce the characteristic hierarchies exhibited by the flavour couplings of the SM.…
Mass anomalous dimension from large N twisted volume reduction
Margarita Garcia Perez, Antonio Gonzalez-Arroyo, Liam Keegan +1
In this work we consider the SU(N) gauge theory with two Dirac fermions in the adjoint representation, in the limit of large N. Taking advantage of large N twisted volume reduction…