Results 31 to 40 of about 511,194 (185)

Renormalisation of composite operators in lattice QCD: perturbative versus nonperturbative [PDF]

, 2010
The perturbative and nonperturbative renormalisation of quark-antiquark operators in lattice QCD with two flavours of clover fermions is investigated within the research programme of the QCDSF collaboration.
James Zanotti, Gockeler, M., Holger Perlt, Paul E.L. Rakow, Pleiter, D., Horsley, R., Schierholz, G., Arwed Schiller, Meinulf Goeckeler, Roger Horsley, Dirk Pleiter, Schafer, A., Stüben, H., Rakow, P., Hinnerk Stuben, Schiller, A., Nakamura, Y., Yoshifumi Nakamura, Andreas Schafer, Perlt, H., Zanotti, J., Gerrit Schierholz   +21 more
core   +1 more source

Small bits of cold dense matter

Physics Letters B, 2018
The behavior of QCD at high baryon density and low temperature is crucial to understanding the properties of neutron stars and gravitational waves emitted during their mergers.
S. Gandolfi, J. Carlson, A. Roggero, J.E. Lynn, S. Reddy   +4 more
doaj   +1 more source

The high-temperature behaviour of lattice QCD with fermions [PDF]

, 1982
Engels J, Karsch F, Satz H. The high-temperature behaviour of lattice QCD with fermions. Physics Letters, B.
Karsch, Frithjof, Engels, Jürgen, Satz, Helmut   +2 more
core   +1 more source

Analytical relation between quark confinement and chiral symmetry breaking in odd-number lattice QCD

EPJ Web of Conferences, 2014
To clarify the relation between confinement and chiral symmetry breaking in QCD, we consider a temporally odd-number lattice, with the temporal lattice size Nt being odd.
Suganuma Hideo, Doi Takahiro M., Iritani Takumi   +2 more
doaj   +1 more source

Problems with finite density simulations of lattice QCD [PDF]

, 1986
Barbour I, Behilil N-E, Dagotto E, et al. Problems with finite density simulations of lattice QCD. Nuclear Physics, B. 1986;275(2):296-318.We present a discussion of problems that have arisen in attempts to understand the behavior of lattice QCD at high ...
Karsch, Frithjof, Moreo, Adriana, Behilil, Nasr-Eddine, Dagotto, Elbio, Stone, Michael, Barbour, Ian, Wyld, H. W.   +6 more
core   +1 more source

Chiral Fermions Algorithms In Lattice QCD

East European Journal of Physics, 2019
The theory that explains the strong interactions of the elementary particles, as part of the standard model, it is the so-called Quantum Chromodynamics (QCD) theory.
Dafina Xhako, Rudina Zeqirllari
doaj   +1 more source

Master integrals for two-loop QCD corrections to quark quasi PDFs

Journal of High Energy Physics, 2020
We compute the master integrals for the two-loop QCD corrections to quark quasi parton distribution functions (PDFs) in the large momentum effective theory (LaMET). With a proper canonical basis, we derive the analytical results for the three families of
Long-Bin Chen, Wei Wang, Ruilin Zhu
doaj   +1 more source

Lattice investigation of the tetraquark candidates a0(980) and kappa [PDF]

, 2012
It is a long discussed issue whether light scalar mesons have sizeable four-quark components. We present an exploratory study of this question using Nf = 2+1+1 twisted mass lattice QCD.
Urbach, Carsten, Wagner, Marc, Scorzato, Luigi, Constantia Alexandrou, Luigi Scorzato, Alexandrou, Constantia, Dalla Brida, Mattia, Daldrop, Jan Oliver, Mattia Dalla Brida, Mario Gravina, Gravina, Mario, Marc Wagner, Carsten Urbach, Jan Daldrop   +13 more
core   +1 more source

Probing and Graph Coloring Techniques for Trace Estimation in Lattice QCD

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT The computation of Tr[D−1]$\mathrm{Tr}[D^{-1}]$, where D$D$ is the Wilson–Dirac matrix of Lattice QCD, is a fundamental and computationally demanding task with applications to disconnected hadronic correlation functions. Since D−1$D^{-1}$ is a dense matrix of prohibitive size, its trace cannot be computed exactly, and one must resort to ...
Mario Papace, Andreas Frommer, Jose Jimenez‐Merchan, Bruno Lang, Gustavo Ramirez‐Hidalgo, Christian Schneider   +5 more
wiley   +1 more source

Scalar mesons and tetraquarks by means of lattice QCD [PDF]

, 2012
We study the light scalar mesons a_0(980) and kappa using N_f = 2+1+1 flavor lattice QCD. In order to probe the internal structure of these scalar mesons, and in particular to identify, whether a sizeable tetraquark component is present, we use a large ...
Daldrop, Jan Oliver, Wiese, Christian, Wagner, Marc, Gravina, Mario, Urbach, Carsten, Scorzato, Luigi, Alexandrou, Constantia, Dalla Brida, Mattia   +7 more
core