Approaches to the sign problem in lattice field theoryQuantum field theories (QFTs) at finite densities of matter generically involve complex actions. Standard Monte-Carlo simulations based upon importance sampling, which have been producing…Christof Gattringer, Kurt Langfeld·Mar 31, 2016SaveLearn
The β-function of SU(3) gauge theory with Nf = 10 massless fermions in the fundamental representationWe present the first study of the discrete β-function of the SU(3) gauge theory with 10 massless domain-wall fermions in the fundamental representation. The renormalized coupling is obtained by…Ting-Wai Chiu·Mar 29, 2016SaveLearn
The quenched SU(2) fundamental scalar propagator in minimal Landau gaugeIt is a long-standing question whether the confinement of matter fields in QCD has an imprint in the (gauge-dependent) correlation functions, especially the propagators. As the analytic structure…Axel Maas·Mar 24, 2016SaveLearn
The Optical Potential on the LatticeThe extraction of hadron-hadron scattering parameters from lattice data by using the Lüscher approach becomes increasingly complicated in the presence of inelastic channels. We propose a method for…Dimitri Agadjanov, Michael Doring, Maxim Mai et al.·Mar 23, 2016SaveLearn
Polyakov loop in 2+1 flavor QCD from low to high temperaturesWe study the free energy of a static quark in QCD with 2+1 flavors in a wide temperature region, 116 MeV < T < 5814 MeV, using the highly improved staggered quark (HISQ) action. We analyze the…A. Bazavov, N. Brambilla, H. -T. Ding et al.·Mar 21, 2016SaveLearn
Continuum limit of the D meson, Ds meson and charmonium spectrum from Nf=2+1+1 twisted mass lattice QCDWe compute masses of D meson, Ds meson and charmonium states using Nf=2+1+1 Wilson twisted mass lattice QCD. All results are extrapolated to physical light quark masses, physical strange and…Krzysztof Cichy, Martin Kalinowski, Marc Wagner·Mar 21, 2016SaveLearn
Interpreting Numerical Measurements in Fixed Topological SectorsFor quantum field theories with topological sectors, Monte Carlo simulations on fine lattices tend to be obstructed by an extremely long auto-correlation time with respect to the topological charge.…Wolfgang Bietenholz, Christopher Czaban, Arthur Dromard et al.·Mar 17, 2016SaveLearn
The Wilson Flow and the finite temperature phase transitionWe consider the determination of the finite temperature phase transition in the Yang--Mills SU(3) gauge theory. We compute the difference of the spatial and temporal energy density at a physical…Michèle Wandelt, Francesco Knechtli, Michael Günther·Mar 17, 2016SaveLearn
Chiral condensate in the Schwinger model with Matrix Product OperatorsTensor network (TN) methods, in particular the Matrix Product States (MPS) ansatz, have proven to be a useful tool in analyzing the properties of lattice gauge theories. They allow for a very good…Mari Carmen Bañuls, Krzysztof Cichy, Karl Jansen et al.·Mar 16, 2016SaveLearn
Angular momentum content of the ρ(1450) from chiral lattice fermionsWe identify the chiral and angular momentum content of the leading quark-antiquark Fock component for the ρ(770) and ρ(1450) mesons using a two-flavor lattice simulation with dynamical Overlap…C. Rohrhofer, M. Pak, L. Ya. Glozman·Mar 15, 2016SaveLearn
Supersymmetry on the latticeWe discuss the motivations, difficulties and progress in the study of supersymmetric lattice gauge theories focusing in particular on N=1 and N=4 super Yang-Mills in four…Georg Bergner, Simon Catterall·Mar 14, 2016SaveLearn
Mass of the b-quark and B-decay constants from Nf=2+1+1 twisted-mass Lattice QCDWe present precise lattice computations for the b-quark mass, the quark mass ratios mb/mc and mb/ms as well as the leptonic B-decay constants. We employ gauge configurations with four dynamical quark…ETM Collaboration, A. Bussone, N. Carrasco et al.·Mar 14, 2016SaveLearn
Numerical methods for the sign problem in Lattice Field TheoryThe great majority of algorithms employed in the study of lattice field theory are based on Monte Carlo's importance sampling method, i.e. on probability interpretation of the Boltzmann weight.…Lorenzo Bongiovanni·Mar 10, 2016SaveLearn
Complete Monopole Dominance of the Yang-Mills Confining PotentialWe continue our investigation of quark confinement using a particular variant of the Cho-Duan-Ge gauge independent Abelian decomposition. The decomposition splits the gauge field into a restricted…Nigel Cundy, Y. M. Cho, Weonjong Lee·Mar 10, 2016SaveLearn
Erratum: Standard-model prediction for direct CP violation in Kππ decayIn this document we address an error discovered in the ensemble generation for our calculation of the I=0 Kππ amplitude (Phys. Rev. Lett. 115, 212001 (2015), arXiv:1505.07863) whereby the same…Z. Bai, T. Blum, P. A. Boyle et al.·Mar 8, 2016SaveLearn
Quark Contraction Tool -- QCTWe present a Mathematica package for the calculation of Wick contractions in quantum field theories - QCT. Furthermore the package aims at automatically generating code for the calculation of…Dalibor Djukanovic·Mar 4, 2016SaveLearn
Unphysical Poles of Domain Wall Fermions at finite LsWe investigate the origin and behavior of oscillations observed in the hadron correlators constructed from the domain wall fermion (DWF) for different parameters involved in lattice QCD simulations.…Raza Sabbir Sufian, Michael J. Glatzmaier, Yi-Bo Yang·Mar 4, 2016SaveLearn
Axial U(1) symmetry in the chiral symmetric phase of 2-flavor QCD at finite temperatureWe discuss the fate of the axial U(1) symmetry in 2-flavor QCD at finite temperature, where the non-singlet chiral symmetry is restored. We first summarize the previous theoretical investigation on…Sinya Aok for JLQCD Collaboration·Mar 3, 2016SaveLearn
Hadron Interactions from lattice QCDWe review our strategy to study hadron interactions from lattice QCD using newly proposed potential method. We first explain our strategy in the case of nuclear potentials and its application to…Sinya Aoki·Mar 3, 2016SaveLearn
Direct determinations of the nucleon and pion σ terms at nearly physical quark massesWe present a high statistics study of the pion and nucleon light and strange quark sigma terms using Nf=2 dynamical non-perturbatively improved clover fermions with a range of pion masses down to…Gunnar S. Bali, Sara Collins, Daniel Richtmann et al.·Mar 2, 2016SaveLearn
Quantum Monte Carlo simulation with a black holeWe perform quantum Monte Carlo simulations in the background of a classical black hole. The lattice discretized path integral is numerically calculated in the Schwarzschild metric and in its…Sanjin Benic, Arata Yamamoto·Mar 2, 2016SaveLearn
The interplay of the sign problem and the infinite volume limit: gauge theories with a theta termQCD and related gauge theories have a sign problem when a θ-term is included; this complicates the extraction of physical information from Euclidean space calculations as one would do in lattice…Yiming Cai, Thomas Cohen, Ari Goldbloom-Helzner et al.·Mar 1, 2016SaveLearn
The chirally rotated Schrödinger functional: theoretical expectations and perturbative testsThe chirally rotated Schrödinger functional (χSF) with massless Wilson-type fermions provides an alternative lattice regularization of the Schrödinger functional (SF), with different lattice…Mattia Dalla Brida, Stefan Sint, Pol Vilaseca·Feb 29, 2016SaveLearn
Sampling of General Correlators in Worm Algorithm-based SimulationsUsing the complex ϕ4-model as a prototype for a system which is simulated by a worm algorithm, we show that not only the charged correlator <ϕ*(x)ϕ(y)>, but also more general correlators such…Tobias Rindlisbacher, Oscar Akerlund, Philippe de Forcrand·Feb 29, 2016SaveLearn
Parton distribution functions from Lattice QCDWe present recent results on the first moments of parton distributions using gauge configurations generated with two degenerate flavors of light twisted mass quarks with pion mass fixed approximately…Constantia Alexandrou·Feb 28, 2016SaveLearn