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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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35 papers · 2 filters
Neutral B-meson mixing from dynamical lattice QCD with chiral light quarks and static b-quarks
Oliver Witzel
In the limit of infinitely heavy b-quarks we compute the SU(3)-breaking ratio xi of neutral B-meson mixing matrix elements. We also present results for the ratio of decay constants…
Progress on charm semileptonic form factors from 2+1 flavor lattice QCD
Jon A. Bailey, A. Bazavov, C. Bernard +19
Lattice calculations of the form factors for the charm semileptonic decays D to K l nu and D to pi l nu provide inputs to direct determinations of the CKM matrix elements |V(cs)| a…
The finite temperature QCD using 2+1 flavors of domain wall fermions at N_t = 8
M. Cheng, N. H. Christ, P. Hegde +6
We study the region of the QCD phase transition using 2+1 flavors of domain wall fermions (DWF) and a lattice volume with a fifth dimension of . The disco…
Singularities of QCD in the complex chemical potential plane
Shinji Ejiri, Hiroshi Yoneyama
We study the thermodynamic singularities of QCD in the complex chemical potential plane by a numerical simulation of lattice QCD, and discuss a method to understand the nature of t…
Progress on four flavor QCD with the HISQ action
MILC Collaboration, A. Bazavov, C. Bernard +11
We describe recent progress on generation of gauge configurations using the Highly Improved Staggered Quark (HISQ) action that was designed by the HPQCD/UKQCD collaboration. The HI…
SU(2) chiral fits to light pseudoscalar masses and decay constants
A. Bazavov, C. Bernard, C. DeTar +12
We present the results of fits to recent asqtad data in the light pseudoscalar sector using SU(2) partially-quenched staggered chiral perturbation theory. Superfine (a~0.06 fm) and…
Physical Point Simulation in 2+1 Flavor Lattice QCD
CS Collaboration, S. Aoki, K. -I. Ishikawa +12
We present the results of the physical point simulation in 2+1 flavor lattice QCD with the nonperturbatively -improved Wilson quark action and the Iwasaki gauge action at $β=…
Equation of State for physical quark masses
M. Cheng, S. Ejiri, P. Hegde +9
We calculate the QCD equation of state for temperatures corresponding to the transition region with physical mass values for two degenerate light quark flavors and a strange quark…
Quark number fluctuations at high temperatures
Peter Petreczky, Prasad Hegde, Alexander Velytsky
We calculate the second, fourth and sixth order quark number fluctuations in the deconfined phase of 2+1 flavor QCD using lattices with temporal extent Nt=4, 6, 8 and 12. We consid…
Dyson's Instability in Lattice Gauge Theory
A. Bazavov, A. Denbleyker, Daping Du +3
We discuss Dyson's argument that the vacuum is unstable under a change g^2 -> - g^2, in the context of lattice gauge theory. For compact gauge groups, the partition function is wel…
Calculation of nucleon strange quark content with dynamical overlap quarks
JLQCD collaboration, K. Takeda, S. Aoki +4
We calculate the nucleon strange quark content directly from disconnected three-point functions. Numerical simulations are carried out in two-flavor QCD using the overlap quark act…
Flavor-singlet mesons in N_f=2+1 QCD with dynamical overlap quarks
JLQCD, TWQCD collaborations, : +9
We report on our study of flavor-singlet mesons in three-flavor QCD with dynamical overlap quarks. Gauge ensembles are generated on a 16^3 x 48 lattice at a lattice spacing of 0.10…
From Quarks to Nuclei: Challenges of Lattice QCD
Sinya Aoki
I discuss challenge of lattice QCD, from quarks to nuclei, which connects QCD with nuclear physics.
Lattice QCD
Sinya Aok
Some topics from recent progresses in lattice QCD are reviewed.
Nucleon sigma term and strange quark content in 2+1-flavor QCD with dynamical overlap fermions
H. Ohki, S. Aoki, H. Fukaya +7
We study the sigma term and the strange quark content of nucleon in 2+1-flavor QCD with dynamical overlap fermions. We analyze the lattice data of nucleon mass taken at two differe…
On the magnetic equation of state in (2+1)-flavor QCD
S. Ejiri, F. Karsch, E. Laermann +6
A first study of critical behavior in the vicinity of the chiral phase transition of (2+1)-flavor QCD is presented. We analyze the quark mass and volume dependence of the chiral co…
Critical point in finite density lattice QCD by canonical approach
Shinji Ejiri
We propose a method to find the QCD critical point at finite density calculating the canonical partition function by Monte-Carlo simulations of lattice QCD…
Spectral Properties of Quarks at Finite Temperature in Lattice QCD
Masakiyo Kitazawa, Frithjof Karsch
We analyze the quark spectral function above and below the critical temperature for deconfinement and at finite momentum in quenched lattice QCD. It is found that the temporal quar…
Equation of State and Heavy-Quark Free Energy at Finite Temperature and Density in Two Flavor Lattice QCD with Wilson Quark Action
S. Ejiri, Y. Maezawa, N. Ukita +5
We study the equation of state at finite temperature and density in two-flavor QCD with the RG-improved gluon action and the clover-improved Wilson quark action on a $ 16^3 \times…
Fixed scale approach to the equation of state on the lattice
K. Kanaya, T. Umeda, S. Aoki +5
We propose a fixed scale approach to calculate the equation of state (EOS) in lattice QCD. In this approach, the temperature T is varied by Nt at fixed lattice spacings. This enabl…
Free energies of heavy quarks in full-QCD lattice simulations with Wilson-type quark action
Y. Maezawa, S. Aoki, S. Ejiri +5
The free energy between a static quark and an antiquark is studied by using the color-singlet Polyakov-line correlation at finite temperature in lattice QCD with 2+1 flavors of imp…
Quark propagator at finite temperature and finite momentum in quenched lattice QCD
Frithjof Karsch, Masakiyo Kitazawa
We present an analysis of the quark spectral function above and below the critical temperature for deconfinement performed at zero and non-zero momentum in quenched lattice QCD usi…
Chiral perturbation theory in a theta vacuum
Sinya Aoki, Hidenori Fukaya
We consider chiral perturbation theory (ChPT) with a non-zero theta term. Due to the CP violating term, the vacuum of chiral fields is shifted to a non-trivial element on the SU(N_…
Precise determination of the strong coupling constant in Nf=2+1 lattice QCD with the Schrödinger functional scheme
S. Aoki, K. I. Ishikawa, N. Ishizuka +11
We present an evaluation of the running coupling constant for Nf=2+1 QCD. The Schroedinger functional scheme is used as the intermediate scheme to carry out non-perturbative runnin…