Lattice computation of the nucleon scalar quark contents at the physical point

Autor: C Torrero, L Lellouch, Sandor D. Katz, Stefan Krieg, Lukas Varnhorst, Antonin Portelli, Th. Lippert, Bálint C. Tóth, Zoltan Fodor, Kalman K. Szabo, T Metivet, Stephan Dürr, C. Hoelbling

Publikováno v: Durr, S, Fodor, Z, Hoelbling, C, Katz, S D, Krieg, S, Lellouch, L, Lippert, T, Metivet, T, Portelli, A, Szabo, K K, Torrero, C, Toth, B C & Varnhorst, L 2016, ' Lattice Computation of the Nucleon Scalar Quark Contents at the Physical Point ', Physical Review Letters, vol. 116, no. 17, pp. 172001 . https://doi.org/10.1103/PhysRevLett.116.172001
Physical Review Letters
Physical Review Letters, American Physical Society, 2016, 116 (17), pp.172001. ⟨10.1103/PhysRevLett.116.172001⟩
Physical review letters 116(17), 172001 (2016). doi:10.1103/PhysRevLett.116.172001
Physical Review Letters, 2016, 116 (17), pp.172001. ⟨10.1103/PhysRevLett.116.172001⟩

We present a QCD calculation of the $u$, $d$ and $s$ scalar quark contents of nucleons based on $47$ lattice ensembles with $N_f = 2+1$ dynamical sea quarks, $5$ lattice spacings down to $0.054\,\text{fm}$, lattice sizes up to $6\,\text{fm}$ and pion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab6886f14e1d1231d2df825254aad814
http://arxiv.org/abs/1510.08013

A new approach to the two-dimensional $\sigma$ model with a topological charge

Autor: B. Alles Salom, O. Borisenko, C. Torrero, V. Kushnir, Alessandro Papa

Publikováno v: Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 — PoS(LATTICE 2013).

Based on character decomposition, a dual transformation is introduced leading to two formulations of the theory which should allow for a removal/softening of the sign problem in the original version. Very preliminar numerical results are commented an

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https://doi.org/10.22323/1.187.0338

Two-point functions of quenched lattice QCD in Numerical Stochastic Perturbation Theory. (II) The gluon propagator in Landau gauge

Autor: Holger Perlt, Arwed Schiller, F. Di Renzo, Ernst-Michael Ilgenfritz, C. Torrero

This is the second of two papers devoted to the perturbative computation of the ghost and gluon propagators in SU(3) Lattice Gauge Theory. Such a computation should enable a comparison with results from lattice simulations in order to reveal the genu

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https://pub.uni-bielefeld.de/record/1929137

Four-loop lattice-regularized vacuum energy density of the three-dimensional SU(3) + adjoint Higgs theory

Autor: York Schröder, C. Torrero, F. Di Renzo, Mikko Laine

The pressure of QCD admits at high temperatures a factorization into purely perturbative contributions from "hard" thermal momenta, and slowly convergent as well as non-perturbative contributions from "soft" thermal momenta. The latter can be related

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a6b0e950f52893c5be049cbfb774047
https://doi.org/10.1088/1126-6708/2008/09/061

Two and three loops computations of renormalization constants for lattice QCD

Autor: F. Di Renzo, V. Miccio, A. Mantovi, C. Torrero, Luigi Scorzato

Renormalization constants can be computed by means of Numerical Stochastic Perturbation Theory to two/three loops in lattice perturbation theory, both in the quenched approximation and in the full (unquenched) theory. As a case of study we report on

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27120445e7f977cf2e7ed9efb1970bdd
http://arxiv.org/abs/hep-lat/0409149