Recent developments at finite density on the latticeSome recent developments to handle the numerical sign problem in QCD and related theories at nonzero density are reviewed. In this contribution I focus on changing the integration order to soften the…Gert Aarts·Feb 6, 2015SaveLearn
Universal formula for the flavor non-singlet axial-vector current from the gradient flowBy employing the gradient/Wilson flow, we derive a universal formula that expresses a correctly normalized flavor non-singlet axial-vector current of quarks. The formula is universal in the sense…Tasuku Endo, Kenji Hieda, Daiki Miura et al.·Feb 6, 2015SaveLearn
Spectroscopy of doubly-charmed baryons from lattice QCDWe present the ground and excited state spectra of doubly charmed baryons from lattice QCD with dynamical quark fields. Calculations are performed on anisotropic lattices of size 163 X 128, with…M. Padmanath, Robert G. Edwards, Nilmani Mathur et al.·Feb 6, 2015SaveLearn
Two-color QCD at high densityQCD at high chemical potential has interesting properties such as deconfinement of quarks. Two-color QCD, which enables numerical simulations on the lattice, constitutes a laboratory to study QCD at…Tamer Boz, Pietro Giudice, Simon Hands et al.·Feb 4, 2015SaveLearn
Dual simulation of finite density lattice QED at large massWe discuss a mapping of lattice QED with two flavors and a chemical potential to dual variables, which are surfaces for the gauge fields and loops for the fermions. The gauge fields are completely…Michael Kniely, Christof Gattringer·Feb 3, 2015SaveLearn
Charm physics with physical light and strange quarks using domain wall fermionsWe present a study of charm physics using RBC/UKQCD 2+1 flavour physical point domain wall fermion ensembles for the light quarks as well as for the valence charm quark. After a brief motivation of…Peter A. Boyle, Luigi Del Debbio, Nicolas Garron et al.·Feb 3, 2015SaveLearn
Heavy hadrons on Nf=2 and 2+1 improved clover-Wilson latticesWe present the masses of singly (B, Bs, Λb, Σb, etc.), doubly (Bc, ηb, Υ, Ξbc, Ξbb, etc.), and triply (Ωbcc, Ωbbc, Ωbbb, etc.) heavy hadrons arising from…Tommy Burch·Feb 2, 2015SaveLearn
Multichannel one-to-two transition amplitudes in a finite volumeWe derive a model-independent expression for finite-volume matrix elements. Specifically, we present a relativistic, non-perturbative analysis of the matrix element of an external current between a…Raúl A. Briceño, Maxwell T. Hansen, André Walker-Loud·Feb 2, 2015SaveLearn
K → ππ ΔI=3/2 decay amplitude in the continuum limitWe present new results for the amplitude A2 for a kaon to decay into two pions with isospin I=2: ReA2 = 1.50(4)stat(14)syst× 10-8 GeV; Im$A2 =…T. Blum, P. A. Boyle, N. H. Christ et al.·Feb 1, 2015SaveLearn
QED Corrections to Hadronic Processes in Lattice QCDIn this paper, for the first time a method is proposed to compute electromagnetic effects in hadronic processes using lattice simulations. The method can be applied, for example, to the leptonic and…N. Carrasco, V. Lubicz, G. Martinelli et al.·Feb 1, 2015SaveLearn
Toward the minimal realization of a light composite HiggsWork in progress is reported on a particularly interesting gauge theory with a fermion doublet in the two-index symmetric (sextet) representation of the SU(3) color gauge group. Extending previous…Zoltan Fodor, Kieran Holland, Julius Kuti et al.·Jan 30, 2015SaveLearn
Lattice baryon spectroscopy with multi-particle interpolatorsIn 2 + 1 flavour lattice QCD the spectrum of the nucleon is presented for both parities using local meson-baryon type interpolating fields in addition to the standard three-quark nucleon…Adrian L. Kiratidis, Waseem Kamleh, Derek B. Leinweber et al.·Jan 30, 2015SaveLearn
Neutron-Antineutron Operator RenormalizationBaryon number symmetry violating theories beyond the standard model with suppressed proton decay rates can be experimentally constrained by data on neutron-antineutron transition rates. In order to…Michael I. Buchoff, Michael Wagman·Jan 30, 2015SaveLearn
Improved gradient flow for step scaling function and scale settingThe gradient flow renormalized coupling offers a simple and relatively inexpensive way to calculate the step scaling function and the lattice scale, but both applications can be hindered by large…Anna Hasenfratz·Jan 30, 2015SaveLearn
Deconfining temperatures in SO(N) and SU(N) gauge theoriesWe present our current results for the deconfining temperatures in SO(N) gauge theories in 2+1 dimensions. SO(2N) theories may help us to understand QCD at finite chemical potential since there is a…Richard Lau, Michael Teper·Jan 30, 2015SaveLearn
The QCD Equation of StateResults for the equation of state in 2+1 flavor QCD at zero net baryon density using the Highly Improved Staggered Quark (HISQ) action by the HotQCD collaboration are presented. The strange quark…Tanmoy Bhattacharya·Jan 30, 2015SaveLearn
Precision calculations of nucleon charges gA, gS, gTWe present a detailed analysis of statistical and systematic errors in the calculation of matrix elements of iso-vector scalar, axial and tensor charges between a neutron and a proton state. These…Rajan Gupta, Tanmoy Bhattacharya, Anosh Joseph et al.·Jan 30, 2015SaveLearn
Three-quark potential and Abelian dominance of confinement in SU(3) QCDWe study the baryonic three-quark (3Q) potential and its Abelian projection in terms of the dual-superconductor picture in SU(3) quenched lattice QCD. The non-Abelian SU(3) gauge theory is projected…Naoyuki Sakumichi, Hideo Suganuma·Jan 29, 2015SaveLearn
Individual eigenvalue distributions for chGSE-chGUE crossover and determination of low-energy constants in two-color QCD+QEDWe compute statistical distributions of individual low-lying eigenvalues of random matrix ensembles interpolating chiral Gaussian symplectic and unitary ensembles. To this aim we use the Nystrom-type…Shinsuke M. Nishigaki, Takuya Yamamoto·Jan 29, 2015SaveLearn
Excited meson radiative transitions from lattice QCD using variationally optimized operatorsWe explore the use of optimized operators, designed to interpolate only a single meson eigenstate, in three-point correlation functions with a vector-current insertion. These operators are…Christian J. Shultz, Jozef J. Dudek, Robert G. Edwards·Jan 29, 2015SaveLearn
High-Performance I/O: HDF5 for Lattice QCDPractitioners of lattice QCD/QFT have been some of the primary pioneer users of the state-of-the-art high-performance-computing systems, and contribute towards the stress tests of such new machines…Thorsten Kurth, Andrew Pochinsky, Abhinav Sarje et al.·Jan 28, 2015SaveLearn
Conformality in twelve-flavour QCDThe spectrum of twelve-flavor QCD has been studied in details by the LatKMI collaboration. In this proceeding we present our updated results for the spectrum obtained with the HISQ action at two…Yasumichi Aoki, Tatsumi Aoyama, Ed Bennett et al.·Jan 27, 2015SaveLearn
Determination of csw in Nf=3+1 Lattice QCD with massive Wilson fermionsWe develop a strategy for the non-perturbative determination of the O(a)-improvement coefficient csw for Wilson fermions with massive sea quarks. The improvement condition is defined via the PCAC…Patrick Fritzsch, Rainer Sommer, Felix Stollenwerk et al.·Jan 27, 2015SaveLearn
Lattice simulations of G2-QCD at finite densityG2-QCD, in which the exceptional Lie group G2 replaces the SU(3) gauge group of QCD, does not suffer from a fermion sign problem. It can therefore be simulated also at comparatively low…Bjoern H. Wellegehausen, Lorenz von Smekal·Jan 27, 2015SaveLearn
Renormalization group flow of linear sigma model with UA(1) anomalyIn the presence of finite UA(1) breaking, chiral phase transition of massless two-flavor QCD is studied by tracing the renormalization group flow of the corresponding effective theory. In the…Tomomi Sato, Norikazu Yamada·Jan 27, 2015SaveLearn