Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Sastre, Alfonso"'
Autor:
Malak, Rehan, Fodor, Zoltan, Hoelbling, Christian, Lellouch, Laurent, Sastre, Alfonso, Szabo, Kalman
We present preliminary results of a 2+1-flavor study of finite-volume effects in the lattice QCD computation of the leading-order hadronic contribution to the muon anomalous magnetic moment. We also present methods for obtaining directly the invarian
Externí odkaz:
http://arxiv.org/abs/1502.02172
The effective potential in thermal gluodynamics has stable minima in perturbation theory. There the Wilson line is center group valued and eigenvalues of the Wilson line stay clustered. Calorons with non-trivial holonomy contribute to one loop order
Externí odkaz:
http://arxiv.org/abs/1501.00474
Publikováno v:
Phys. Rev. D 90, 125002 (2014)
The thermal instanton determinant for the gauge group $SU(2)$ can be reduced to a form involving two simple functions. Various boundary conditions can easily incorporated. Only a two dimensional integral has to be done numerically. As an example we c
Externí odkaz:
http://arxiv.org/abs/1406.6911
Autor:
Durr, Stephan, Fodor, Zoltan, Hoelbling, Christian, Krieg, Stefan, Kurth, Thorsten, Lellouch, Laurent, Lippert, Thomas, Malak, Rehan, Metivet, Thibaut, Portelli, Antonin, Sastre, Alfonso, Szabo, Kalman
Publikováno v:
Phys. Rev. D 90, 114504 (2014)
We perform a detailed, fully-correlated study of the chiral behavior of the pion mass and decay constant, based on 2+1 flavor lattice QCD simulations. These calculations are implemented using tree-level, O(a)-improved Wilson fermions, at four values
Externí odkaz:
http://arxiv.org/abs/1310.3626
We present a detailed study of a filtering method based upon Dirac quasi-zero-modes in the adjoint representation. The procedure induces no distortions on configurations which are solutions of the euclidean classical equations of motion. On the other
Externí odkaz:
http://arxiv.org/abs/1103.5999
Publikováno v:
PoS(Lattice 2010)285
For the non-perturbative analysis of the topological content of Yang-Mills theories, it is essential to disentangle long-range structures from short-range fluctuations. Some time ago, one of us proposed to use the adjoint modes of the Dirac operator
Externí odkaz:
http://arxiv.org/abs/1010.6210
Starting from our proposed model of the Yang-Mills vacuum based on fractional instantons, we review the intellectual itinerary which has guided part of our scientific activity up to our recent work on adjoint zero-modes for calorons.
Comment: Co
Comment: Co
Externí odkaz:
http://arxiv.org/abs/1003.5022
Publikováno v:
JHEP 0906:065,2009
We derive analytic formulas for the zero-modes of the Dirac equation in the adjoint representation in the background field of Q=1 SU(N) calorons. Solutions with various boundary conditions are obtained, including the physically most relevant cases of
Externí odkaz:
http://arxiv.org/abs/0905.0645
Publikováno v:
Phys.Lett.B668:340-345,2008
We study the solutions of the Dirac equation in the adjoint representation(gluinos) in the background field of SU(2) unit charge calorons. Our solutions are forced to be antiperiodic in thermal time and would occur naturally in a semiclassical approa
Externí odkaz:
http://arxiv.org/abs/0807.2285
Publikováno v:
PoSLAT2007:328,2007
The use of adjoint (quasi) zero-modes of the Dirac operator to probe the Yangs-Mills vacuum has been recently advocated by Gonzalez-Arroyo and Kirchner. The construction relies on the use of the super-symmetric zero mode which, for classical configur
Externí odkaz:
http://arxiv.org/abs/0710.0455