Weak hamiltonian Wilson Coefficients from Lattice QCDIn this work we present a calculation of the Wilson Coefficients C1 and C2 of the Effective Weak Hamiltonian to all-orders in αs, using lattice simulations. Given the current availability of…Mattia Bruno·Dec 26, 2017SaveLearn
Canonical approach -- Investigation of finite density QCD phase transitionThe study of QCD phase diagram is very interesting, but we have never understood it well. This is because we face a problem at finite density in QCD. The problem is called sign problem. It causes a…Shotaro Oka·Dec 25, 2017SaveLearn
Three-particle bound states in a finite volume: unequal masses and higher partial wavesAn explicit expression for the finite-volume energy shift of shallow three-body bound states for non-identical particles is obtained in the unitary limit. The inclusion of the higher partial waves is…Yu Meng, Chuan Liu, Ulf-G. Meißner et al.·Dec 22, 2017SaveLearn
Heavy light tetraquarks from Lattice QCDWe present preliminary results from a lattice calculation of tetraquark states in the charm and bottom sector of the type udbb, usbb, udcc and…Parikshit Junnarkar, M Padmanath, Nilmani Mathur·Dec 22, 2017SaveLearn
The twelve-flavor β-function and dilaton tests of the sextet scalarWe discuss near-conformal gauge theories beyond the standard model (BSM) where interesting results on the twelve-flavor β-function of massless fermions in the fundamental representation of the…Zoltan Fodor, Kieran Holland, Julius Kuti et al.·Dec 22, 2017SaveLearn
Neutron Electric Dipole Moment on the LatticeFor the neutron to have an electric dipole moment (EDM), the theory of nature must have T, or equivalently CP, violation. Neutron EDM is a very good probe of novel CP violation in beyond the standard…Boram Yoon, Tanmoy Bhattacharya, Rajan Gupta·Dec 22, 2017SaveLearn
Spectroscopy of Charmed and Bottom Hadrons using Lattice QCDWe present preliminary results on the light, charmed and bottom baryon spectra using overlap valence quarks on the background of 2+1+1 flavours HISQ gauge configurations of the MILC collaboration.…Sourav Mondal, M. Padmanath, Nilmani Mathur·Dec 22, 2017SaveLearn
QCD phase diagram for nonzero isospin-asymmetryThe QCD phase diagram is studied in the presence of an isospin asymmetry using continuum extrapolated staggered quarks with physical masses. In particular, we investigate the phase boundary between…B. B. Brandt, G. Endrodi, S. Schmalzbauer·Dec 21, 2017SaveLearn
Berezinskii-Kosterlitz-Thouless transition in lattice Schwinger model with one flavor of Wilson fermionWe have made a detailed study of the phase structure for lattice Schwinger model with one flavor of Wilson fermion on the (m,g) plane. For numerical investigation, we develop a decorated tensor…Yuya Shimizu, Yoshinobu Kuramashi·Dec 21, 2017SaveLearn
Solution of the sign problem in the Potts model at fixed fermion numberWe consider the heavy-dense limit of QCD at finite fermion density in the canonical formulation and approximate it by a 3-state Potts model. In the strong coupling limit, the model is free of the…Andrei Alexandru, Georg Bergner, David Schaich et al.·Dec 20, 2017SaveLearn
Complex Langevin analysis of the spontaneous symmetry breaking in dimensionally reduced super Yang-Mills modelsIn recent years the complex Langevin method (CLM) has proven a powerful method in studying statistical systems which suffer from the sign problem. Here we show that it can also be applied to an…Konstantinos N. Anagnostopoulos, Takehiro Azuma, Yuta Ito et al.·Dec 20, 2017SaveLearn
Dual representation of lattice QCD with worldlines and worldsheets of abelian color fluxesWe present a new dual representation for lattice QCD in terms of wordlines and worldsheets. The exact reformulation is carried out using the recently developed abelian color flux method where the…Carlotta Marchis, Christof Gattringer·Dec 20, 2017SaveLearn
Complex Langevin Simulation of a Random Matrix Model at Nonzero Chemical PotentialIn this paper we test the complex Langevin algorithm for numerical simulations of a random matrix model of QCD with a first order phase transition to a phase of finite baryon density. We observe that…J. Bloch, J. Glesaaen, J. J. M. Verbaarschot et al.·Dec 19, 2017SaveLearn
Blockspin renormalization-group study of color confinement due to violation of the non-Abelian Bianchi identityBlock-spin transformation of topological defects is applied to the violation of the non-Abelian Bianchi identity (VMABI) on lattice defined as Abelian monopoles. To get rid of lattice artifacts, we…Tsuneo Suzuki·Dec 19, 2017SaveLearn
A new scheme for color confinement and violation of the non-Abelian Bianchi identitiesA new scheme for color confinement in QCD due to violation of the non-Abelian Bianchi identities proposed earlier is revised. The violation of the non-Abelian Bianchi identities (VNABI) Jμ is…Tsuneo Suzuki, Katsuya Ishiguro, Vitaly Bornyakov·Dec 16, 2017SaveLearn
c N form factors from lattice QCD and phenomenology of c n + and c p μ+ μ- decaysA lattice QCD determination of the c N vector, axial vector, and tensor form factors is reported. The calculation was performed with 2+1 flavors of domain wall fermions at lattice…Stefan Meinel·Dec 15, 2017SaveLearn
Color Structure of Gluon Field Magnetic MassThe color structure of the gluon field magnetic mass is investigated in the lattice SU(2) gluodynamics. To realize that, the interaction between a monopole-antimonopole string and external neutral…Natalia V. Kolomoyets, Vladimir V. Skalozub·Dec 15, 2017SaveLearn
Can axial U(1) anomaly disappear at high temperature?In our recent study of two-flavor lattice QCD using chiral fermions, we find strong suppression of axial U(1) anomaly above the critical temperature of chiral phase transition. Our simulation data…Hidenori Fukaya·Dec 15, 2017SaveLearn
Topological susceptibility in 2+1-flavor QCD with chiral fermionsWe compute the topological susceptibility χt of 2+1-flavor lattice QCD with dynamical Möbius domain-wall fermions, whose residual mass is kept at 1 MeV or smaller. In our analysis, we focus on the…Sinya Aoki, Guido Cossu, Hidenori Fukaya et al.·Dec 15, 2017SaveLearn
CLS 2+1 flavor simulations at physical light- and strange-quark massesWe report recent efforts by CLS to generate an ensemble with physical light- and strange-quark masses in a lattice volume of 192x963 at β=3.55 corresponding to a lattice spacing of 0.064 fm. This…Daniel Mohler, Stefan Schaefer, Jakob Simeth·Dec 13, 2017SaveLearn
Low energy properties of SU(2) gauge theory with Nf = 3/2 flavours of adjoint fermionsIn this work we present the results of a numerical investigation of SU(2) gauge theory with Nf = 3/2 flavours of fermions, corresponding to 3 Majorana fermions, which transform in the adjoint…Georg Bergner, Pietro Giudice, Istvan Montvay et al.·Dec 13, 2017SaveLearn
Mass Spectra of Ds and Ωc in Lattice QCD with Nf= 2+1+1 Domain-Wall QuarksWe perform hybrid Monte Carlo simulation of lattice QCD with Nf=2+1+1 optimal domain-wall quarks on the 323 × 64 lattice with lattice spacing a 0.06 fm, and generate a gauge…Ting-Wai Chiu·Dec 13, 2017SaveLearn
Sp(4) gauge theory on the lattice: towards SU(4)/Sp(4) composite Higgs (and beyond)The Sp(4) gauge theory with two Dirac fundamental flavours provides a candidate for the microscopic origin of composite-Higgs models based on the SU(4)/Sp(4) coset. We employ a combination of two…Ed Bennett, Deog Ki Hong, Jong-Wan Lee et al.·Dec 12, 2017SaveLearn
Towards reduction of autocorrelation in HMC by machine learningIn this paper we propose new algorithm to reduce autocorrelation in Markov chain Monte-Carlo algorithms for euclidean field theories on the lattice. Our proposing algorithm is the Hybrid Monte-Carlo…Akinori Tanaka, Akio Tomiya·Dec 11, 2017SaveLearn
Atiyah-Patodi-Singer index theorem for domain-wall fermion Dirac operatorRecently, the Atiyah-Patodi-Singer(APS) index theorem attracts attention for understanding physics on the surface of materials in topological phases. Although it is widely applied to physics, the…Hidenori Fukaya, Tetsuya Onogi, Satoshi Yamaguchi·Dec 11, 2017SaveLearn