Towards the QCD equation of state at the physical point using Wilson fermionWe study the (2+1)-flavor QCD at nonzero temperatures using nonperturbatively improved Wilson quarks of the physical masses by the fixed scale approach. We perform physical point simulations at…T. Umeda, S. Ejiri, R. Iwami et al.·Nov 15, 2015SaveLearn
Polyakov loop renormalization with gradient flowWe propose to use the gradient flow for the renormalization of Polyakov loops in various representations. We study Polyakov loops in 2+1 flavor QCD using the HISQ action and lattices with temporal…Peter Petreczky, Hans-Peter Schadler·Nov 14, 2015SaveLearn
Nucleon axial and tensor charges with dynamical overlap quarksWe report on our calculation of the nucleon axial and tensor charges in 2+1-flavor QCD with dynamical overlap quarks. Gauge ensembles are generated at a single lattice spacing 0.12 fm and at a…N. Yamanaka, H. Ohki, S. Hashimoto et al.·Nov 14, 2015SaveLearn
Gravitational waves from cosmological first order phase transitionsFirst order phase transitions in the early Universe generate gravitational waves, which may be observable in future space-based gravitational wave observatiories, e.g. the European eLISA satellite…Mark Hindmarsh, Stephan Huber, Kari Rummukainen et al.·Nov 14, 2015SaveLearn
Spectrum and Bethe-Salpeter amplitudes of Ω baryons from lattice QCDThe Ω baryons with JP=3/2, 1/2 are studied on the lattice in the quenched approximation. Their mass levels are ordered as M3/2+<M3/2-≈ M1/2-<M1/2+, as is expected…Jian Liang, Wei Sun, Ying Chen et al.·Nov 13, 2015SaveLearn
Confinement/deconfinement phase transition in SU(3) Yang-Mills theory in view of dual superconductivityIn the preceeding works, we have given a non-Abelian dual superconductivity picture for quark confinement, and demonstrated the numerical evidences on the lattice. In this talk, we discuss the…Akihiro Shibata, Kei-Ichi Kondo, Seikou Kato et al.·Nov 13, 2015SaveLearn
Positive parity Ds mesonsWe study the positive parity charmed strange mesons using lattice QCD, the only reliable ab initio method to study QCD at low energies. Especially the experimentally observed Ds0*(2317) and…Luka Leskovec, C. B. Lang, Daniel Mohler et al.·Nov 13, 2015SaveLearn
NLO and NNLO Low Energy Constants for SU(2) Chiral Perturbation TheoryWe have performed global fits of fπ and mπ, from a variety of RBC-UKQCD domain wall fermion ensembles, to SU(2) partially quenched chiral perturbation theory at NNLO. We report values for 9…R. D. Mawhinney, D. J. Murphy·Nov 13, 2015SaveLearn
Template Composite Dark Matter : SU(2) gauge theory with 2 fundamental flavoursWe present a non perturbative study of SU(2) gauge theory with two fundamental Dirac flavours. We discuss how the model can be used as a template for composite Dark Matter (DM). We estimate one…Vincent Drach, Ari Hietanen, Claudio Pica et al.·Nov 13, 2015SaveLearn
Tensor networks for gauge field theoriesOver the last decade tensor network states (TNS) have emerged as a powerful tool for the study of quantum many body systems. The matrix product states (MPS) are one particular class of TNS and are…Boye Buyens, Jutho Haegeman, Frank Verstraete et al.·Nov 13, 2015SaveLearn
Lattice NRQCD study of quarkonium at non-zero temperatureTo study the in-medium modification of quarkonium properties, charmonium correlators at 140.4 (β=6.664) T 221 (β= 7.280) (MeV) are calculated using the NRQCD formalism on 483 × 12…Seyong Kim, Peter Petreczky, Alexander Rothkopf·Nov 13, 2015SaveLearn
Towards string breaking with 2+1 dynamical fermions using the stochastic LapH methodWe investigate the use of stochastically estimated light quark propagators in correlation functions involving a static color source. To this end we compute the static-light meson pseudoscalar…Vanessa Koch, John Bulava, Ben Hörz et al.·Nov 12, 2015SaveLearn
On the nature of an emergent symmetry in QCDRemarkable symmetry properties appear to arise in lattice calculations of correlation functions in which the lowest-lying eigenmodes of the Dirac operator in quark propagators are removed by hand.…Thomas D. Cohen·Nov 12, 2015SaveLearn
Effects of higher dimension operators on the Standard Model Higgs sectorWe study the effect of higher dimension operators on the electroweak finite temperature phase transition in two sectors of the Standard Model. Firstly, the Higgs-Yukawa sector, consisting of the…Oscar Akerlund, Philippe de Forcrand, Jakob Steinbauer·Nov 12, 2015SaveLearn
D-meson semileptonic form factors at zero momentum transfer in (2+1+1)-flavor lattice QCDWe present a calculation of the D K ν and Dπ ν semileptonic form factors at q2=0, which enable determinations of the CKM matrix elements Vcs and…Thomas Primer, Claude Bernard, Carleton DeTar et al.·Nov 12, 2015SaveLearn
Wilson Fermions with Four Fermion InteractionsWe present a lattice study of a four fermion theory, known as Nambu Jona-Lasinio (NJL) theory, via Wilson fermions. Four fermion interactions naturally occur in several extensions of the Standard…Jarno Rantaharju, Vincent Drach, Ari Hietanen et al.·Nov 12, 2015SaveLearn
Extracting the η meson mass from gluonic correlators in lattice QCDCalculation of the eta-prime meson mass is a notoriously difficult problem, as it requires evaluation of the disconnected diagram which is costly and noisy. In this work, we use a gluonic operator to…JLQCD collaboration, H. Fukaya, G. Cossu et al.·Nov 12, 2015SaveLearn
Nonperturbative Regulator for Chiral Gauge Theories?We propose a nonperturbative gauge invariant regulator for d-dimensional chiral gauge theories on the lattice. The method involves simulating domain wall fermions in d + 1 dimensions with quantum…Dorota M. Grabowska, David B. Kaplan·Nov 11, 2015SaveLearn
Non-trivial Center Dominance in High Temperature QCDWe investigate the properties of quarks and gluons above the chiral phase transition temperature Tc, using the RG improved gauge action and the Wilson quark action with two degenerate quarks…K. -I. Ishikawa, Y. Iwasaki, Yu Nakayama et al.·Nov 11, 2015SaveLearn
Cluster expansions and chiral symmetry at large density in 2-color QCDSU(Nc) lattice gauge theories with Nf flavors of massless staggered fermions are considered at high quark chemical potential μ and any temperature T. In the strong coupling regime…E. T. Tomboulis·Nov 11, 2015SaveLearn
A novel computation of the thermodynamics of the SU(3) Yang-Mills theoryWe present an accurate computation of the Equation of State of the SU(3) Yang-Mills theory using shifted boundary conditions in the temporal direction. In this framework, the entropy density s can be…Leonardo Giusti, Michele Pepe·Nov 11, 2015SaveLearn
Gradient flow and IR fixed point in SU(2) with Nf=8 flavorsWe study the running of the coupling in SU(2) gauge theory with 8 massless fundamental representation fermion flavours, using the gradient flow method with the Schrödinger functional boundary…Viljami Leino, Tuomas Karavirta, Jarno Rantaharju et al.·Nov 11, 2015SaveLearn
Mass anomalous dimension of SU(2) with Nf=8 using the spectral density methodSU(2) with Nf=8 is believed to have an infrared conformal fixed point. We use the spectral density method to evaluate the coupling constant dependence of the mass anomalous dimension for massless HEX…Joni M. Suorsa, Viljami Leino, Jarno Rantaharju et al.·Nov 11, 2015SaveLearn
The curvature of the chiral phase transition line for small values of μBWe present preliminary results from an ongoing calculation to determine the curvature of the chiral phase transition line in the chiral limit along the light-light, light-strange and strange-strange…Prasad Hegde, Heng-Tong Ding·Nov 11, 2015SaveLearn
The nature of the Roberge-Weiss Transition in Nf=2 QCD with Wilson Fermions on Nτ=6 latticesThe finite temperature chiral and deconfinement phase transitions at zero density for light and heavy quarks, respectively, have analytic continuations to imaginary chemical potential. At some…Francesca Cuteri, Christopher Czaban, Owe Philipsen et al.·Nov 10, 2015SaveLearn