## Search

Now showing items 1-40 of 1

Title: Lattice QCD at the physical point: light quark masses

Author: ; ; ; ; ; ; ; ; ;

Date: 2011

Submitted: 2020-04-07

(2011)

Title: High-precision scale setting in lattice QCD

Author: ; ; ; ; ; ; ; ; ; ; Szabo, KK

Date: 2012

Submitted: 2020-04-07

(2012)

Scale setting is of central importance in lattice QCD. It is required to predict dimensional quantities in physical units. Moreover, it determines the relative lattice spacings of computations performed at different values ...

Title: QCD thermodynamics with dynamical overlap fermions

Author: ; ; ; ; ; ; ; ;

Date: 2012

Submitted: 2020-04-07

(2012)

We study QCD thermodynamics using two flavors of dynamical overlap fermions with quark masses corresponding to a pion mass of 350 MeV. We determine several observables on N-t = 6 and 8 lattices. All our runs are performed ...

Title: Freeze-Out Parameters from Electric Charge and Baryon Number Fluctuations: Is There Consistency?

Author: ; ; ; ; ;

Date: 2014

Submitted: 2020-04-07

(2014)

Recent results for moments of multiplicity distributions of net protons and net-electric charge from the STAR Collaboration are compared to lattice QCD results for higher order fluctuations of baryon number and electric ...

Title: The QCD equation of state with dynamical quarks

Author: ; ; ; ; ; ; ;

Date: 2010

Submitted: 2020-04-07

(2010)

The present paper concludes our investigation on the QCD equation of state with 2 + 1 staggered flavors and one-link stout improvement. We extend our previous study [JHEP 01 (2006) 089] by choosing even finer lattices. ...

Title: QCD thermodynamics with continuum extrapolated Wilson fermions I

Author: ; ; ; ; ; ; ; ; ;

Date: 2012

Submitted: 2020-04-07

(2012)

QCD thermodynamics is considered using Wilson fermions in the fixed scale approach. The temperature dependence of the renormalized chiral condensate, quark number susceptibility and Polyakov loop is measured at four lattice ...

Title: Is there still any T-c mystery in lattice QCD? Results with physical masses in the continuum limit III

Author: ; ; ; ; ; ;

Date: 2010

Submitted: 2020-04-07

(2010)

The present paper concludes our investigations on the QCD cross-over transition temperatures with 2+1 staggered flavours and one-link stout improvement. We extend our previous two studies [Phys. Lett. B643 (2006) 46, JHEP ...

Title: Static QQ pair free energy and screening masses from correlators of Polyakov loops: continuum extrapolated lattice results at the QCD physical point

Author: ; ; ; ; ;

Date: 2015

Submitted: 2020-04-07

(2015)

We study the correlators of Polyakov loops, and the corresponding gauge invariant free energy of a static quark-antiquark pair in 2+1 flavor QCD at finite temperature. Our simulations were carried out on N-t = 6, 8, 10, ...

Title: Precision computation of the kaon bag parameter

Author: ; ; ; ; ; ; ; ; ; ; Szabo, KK

Date: 2011

Submitted: 2020-04-07

(2011)

Title: Full result for the QCD equation of state with 2 +/- 1 flavors

Author: ; ; ; ; ;

Date: 2014

Submitted: 2020-04-07

(2014)

We present a full result for the 2 + 1 flavor QCD equation of state. All the systematics are controlled, the quark masses are set to their physical values, and the continuum extrapolation is carried out. This extends our ...

Title: Ratio F-K/F-pi in QCD

Author: ; ; ; ; ; ; ; ; ;

Date: 2010

Submitted: 2020-04-07

(2010)

We determine the ratio F-K/ F-pi in QCD with N-f =2 + 1 flavors of sea quarks, based on a series of lattice calculations with three different lattice spacings, large volumes, and a simulated pion mass reaching down to about ...

Title: Scaling study of dynamical smeared-link clover fermions

Author: ; ; ; ; ; ; ; ; ; ; Vulvert, G

Date: 2009

Submitted: 2020-08-11

(2009)

We present a framework for phenomenological lattice QCD calculations which makes use of a tree-evel Symanzink improved action for gluons and stout-link Wilson fermions. We give details of our efficient HMC/RHMC algorithm ...

Title: Up and Down Quark Masses and Corrections to Dashen's Theorem from Lattice QCD and Quenched QED

Author: ; ; ; ; ; ; ; ;

Date: 2016

Submitted: 2020-04-07

(2016)

In a previous Letter [Borsanyi et al., Phys. Rev. Lett. 111, 252001 (2013)] we determined the isospin mass splittings of the baryon octet from a lattice calculation based on N-f = 2 + 1 QCD simulations to which QED effects ...

Title: QCD equation of state at nonzero chemical potential: continuum results with physical quark masses at order mu(2)

Author: ; ; ; ; ; ;

Date: 2012

Submitted: 2020-04-07

(2012)

We determine the equation of state of QCD for nonzero chemical potentials via a Taylor expansion of the pressure. The results are obtained for N-f = 2 + 1 flavors of quarks with physical masses, on various lattice spacings. ...

Title: Precision SU(3) lattice thermodynamics for a large temperature range

Author: ; ; ; ;

Date: 2012

Submitted: 2020-04-07

(2012)

We present the equation of state (pressure, trace anomaly, energy density and entropy density) of the SU(3) gauge theory from lattice field theory in an unprecedented precision and temperature range. We control both finite ...

Title: Chiral behavior of pseudo-Goldstone boson masses and decay constants in 2+1 flavor QCD

Author: ; ; ; ; ; ; ; ; ;

Date: 2007

Submitted: 2020-08-11

(2007)

Title: Mixed action simulations: Approaching physical quark masses

Author: ; ; ; ; ; ; ; ; ;

Date: 2007

Submitted: 2020-08-11

(2007)

Title: QCD transition temperature: full staggered result

Author: ; ; ; ; ; ;

Date: 2010

Submitted: 2020-08-11

(2010)

We conclude our investigations on the QCD cross-over transition temperatures with 2+1 staggered flavours and one-link stout improvement. We extend our previous two studies [Phys. Lett. B643 (2006) 46, JHEP 0906:088 (2009)] ...

Title: Ab Initio Determination of Light Hadron Masses

Author: ; ; ; ; ; ; ; ; ; ; Szabo, KK; Vulvert, G

Date: 2008

Submitted: 2020-08-11

(2008)

More than 99% of the mass of the visible universe is made up of protons and neutrons. Both particles are much heavier than their quark and gluon constituents, and the Standard Model of particle physics should explain this ...

Title: Scaling study for 2 HEX smeared fermions: hadron and quark masses

Author: ; ; ; ; ; ; ; ; ;

Date: 2010

Submitted: 2020-08-11

(2010)

Title: Rho decay width from the lattice

Author: ; ; ; ; ; ; ; ; ; ; Ramos, A; Szabo, KK

Date: 2010

Submitted: 2020-08-11

(2010)

Title: Electromagnetic corrections to light hadron masses

Author: ; ; ; ; ; ; ; ; ; ; Ramos, A; Szabo, KK

Date: 2010

Submitted: 2020-08-11

(2010)

Title: Sigma term and strangeness content of the nucleon

Author: ; ; ; ; ; ; ; ; ; ; Portelli, A; Ramos, A; Schafer, A; Szabo, KK

Date: 2010

Submitted: 2020-08-11

(2010)

Title: QCD thermodynamics with Wilson fermions

Author: ; ; ; ; ; ; ; ;

Date: 2011

Submitted: 2020-08-11

(2011)

QCD is investigated at finite temperature using Wilson fermions in the fixed scale approach. A 2+1 flavor stout and clover improved action is used at four lattice spacings allowing for control over discretization errors. ...

Title: SU(2) chiral perturbation theory low-energy constants from staggered 2+1 flavor simulations

Author: ; ; ; ; ; ; ;

Date: 2011

Submitted: 2020-08-11

(2011)

We extract the NLO low-energy constants \bar\ell_3 and \bar\ell_4 of SU(2) chiral perturbation theory, based on precise lattice data for the pion mass and decay constant on ensembles generated by the Wuppertal-Budapest ...

Title: The finite temperature QCD transition in external magnetic fields

Author: ; ; ; ; ; ; ;

Date: 2011

Submitted: 2020-08-11

(2011)

The effect of an external magnetic field on the finite temperature transition of QCD is studied. We measure thermodynamic observables including the quark condensates and susceptibilities and the strange quark number ...

Title: Recent results on QCD thermodynamics: lattice QCD versus Hadron Resonance Gas model

Author: ; ; ; ; ; ;

Date: 2011

Submitted: 2020-08-11

(2011)

Title: Quantum electrodynamics in finite volume and nonrelativistic effective field theories

Author: ; ; ; ; ; ;

Date: 2016

Submitted: 2020-08-10

(2016)

Electromagnetic effects are increasingly being accounted for in lattice quantum chromodynamics computations. Because of their long-range nature, they lead to large finite-size effects over which it is important to gain ...

Title: Axion cosmology, lattice QCD and the dilute instanton gas

Author: ; ; ; ; ; ; ; ;

Date: 2016

Submitted: 2020-08-10

(2016)

Title: The QCD equation of state at nonzero densities: lattice result

Author: ; ;

Date: 2003

Submitted: 2020-08-07

(2003)

In this Letter we give the equation of state of QCD at finite temperatures and densities. The recently proposed overlap improving multi-parameter reweighting technique is used to determine observables at nonvanishing ...

Title: The QCD equation of state at finite T and mu

Author: ; ; ; ; ;

Date: 2003

Submitted: 2020-08-07

(2003)

We calculate the pressure (p), the energy density (epsilon) and the baryon density (n(B)) of QCD at finite temperatures (T) and chemical potentials (mu). The recently proposed overlap improving multi-parameter reweighting ...

Title: The QCD transition temperature: Results with physical masses in the continuum limit

Author: ; ; ;

Date: 2006

Submitted: 2020-08-07

(2006)

The transition temperature (T-c) of QCD is determined by Symanzik improved gauge and stout-link improved staggered fermionic lattice simulations. We use physical masses both for the light quarks (m(ud)) and for the strange ...

Title: Dynamical overlap fermions, results with hybrid Monte-Carlo algorithm

Author: ; ;

Date: 2004

Submitted: 2020-08-07

(2004)

We present first, exploratory results of a hybrid Monte-Carlo algorithm for dynamical, n(f) = 2, four-dimensional QCD with overlap fermions. As expected, the computational requirements are typically two orders of magnitude ...

Title: The order of the quantum chromodynamics transition predicted by the standard model of particle physics

Author: ; ; ; ;

Date: 2006

Submitted: 2020-08-07

(2006)

Quantum chromodynamics (QCD) is the theory of the strong interaction, explaining (for example) the binding of three almost massless quarks into a much heavier proton or neutron-and thus most of the mass of the visible ...

Title: Lattice QCD as a video game

Author: ; ; ; ; ;

Date: 2007

Submitted: 2020-08-07

(2007)

The speed, bandwidth and cost characteristics of today's PC graphics cards make them an attractive target as general purpose computational platforms. High performance can be achieved also for lattice simulations but the ...

Title: Dynamical overlap fermions, results with HMC algorithm

Author: ; ;

Date: 2005

Submitted: 2020-08-07

(2005)

We present results of a hybrid Monte-Carlo algorithm for dynamical, n(f) = 2, four-dimensional QCD with overlap fermions. The fermionic force requires careful treatment, when changing topological sectors. The pion mass ...

Title: Grand canonical potential for a static quark-anti-quark pair at mu not equal 0

Author: ; ; ;

Date: 2005

Submitted: 2020-08-07

(2005)

We present numerical results on the static quark-anti-quark grand canonical potential in full QCD at nonvanishing temperature (T) and quark chemical potential (mu). Non-zero mu-s are reached by means of multiparameter ...

Title: The equation of state in lattice QCD: With physical quark masses towards the continuum limit

Author: ; ; ;

Date: 2006

Submitted: 2020-08-07

(2006)

Title: Topology with dynamical overlap fermions

Author: ; ; ;

Date: 2006

Submitted: 2020-08-07

(2006)

Title: Quasiparticle description of the QCD plasma, comparison with lattice results at finite T and mu

Author: ;

Date: 2003

Submitted: 2020-08-07

(2003)

We compare our 2+1 flavor, staggered QCD lattice results with a quasiparticle picture. We determine the pressure, the energy density, the baryon density, the speed of sound and the thermal masses as a function of T and ...