Dirac Eigenvalue spectrum of Nf=2+1 QCD towards the chiral limit using HISQ fermionsWe utilize the eigenvalue filtering technique combined with the stochastic estimate of the mode number to determine the eigenvalue spectrum. Simulations of (2 + 1)-flavor QCD are performed using the…Heng-Tong Ding, Olaf Kaczmarek, Frithjof Karsch et al.·Jan 15, 2020SaveLearn
Scaling and higher twist in the nucleon Compton amplitudeThe partonic structure of hadrons plays an important role in a vast array of high-energy and nuclear physics experiments. It also underpins the theoretical understanding of hadron structure. Recent…A. Hannaford-Gunn, R. Horsley, Y. Nakamura et al.·Jan 15, 2020SaveLearn
Pion valence quark distribution from current-current correlation in lattice QCDWe extract the pion valence quark distribution qπ v(x) from lattice QCD (LQCD) calculated matrix elements of spacelike correlations of one vector and one axial vector current analyzed in…Raza Sabbir Sufian, Colin Egerer, Joseph Karpie et al.·Jan 14, 2020SaveLearn
On QCD strings beyond non-interacting modelWe investigate the implications of Nambu-Goto (NG), Lüscher-Weisz (LW) and Polyakov-Kleinert (PK) string actions for the Casimir energy of the QCD flux-tube at one and two loop order at finite…A. S. Bakry, M. A. Deliyergiyev, A. A. Galal et al.·Jan 13, 2020SaveLearn
Mesonic correlators at non-zero baryon chemical potentialIn order to study the fate of mesons in thermal QCD at finite baryon chemical potential, we consider light mesonic correlation functions using the Taylor expansion to O((μ/T)2), in both the…G. Aarts, C. Allton, D. De Boni et al.·Jan 13, 2020SaveLearn
The twisted gradient flow running coupling in SU(3): a non-perturbative determinationWe report some preliminary results of our ongoing non-perturbative computation of the twisted 't Hooft running coupling in a particular set-up, using the gradient flow to define the coupling and…Eduardo I. Bribian, Margarita Garcia Perez, Alberto Ramos·Jan 11, 2020SaveLearn
The rate of photon production in the quark-gluon plasma from lattice QCDWe calculate the thermal rate of real-photon production in the quark-gluon plasma at a temperature of T=254 MeV using lattice QCD. The calculation is based on the difference between the spatially…Marco Cè, Tim Harris, Harvey B. Meyer et al.·Jan 10, 2020SaveLearn
Nature of the phase transition for finite temperature N f=3 QCD with nonperturbatively O(a) improved Wilson fermions at N t=12We study the nature of the finite temperature phase transition for three-flavor QCD. In particular we investigate the location of the critical endpoint along the three flavor symmetric line in the…Yoshinobu Kuramashi, Yoshifumi Nakamura, Hiroshi Ohno et al.·Jan 10, 2020SaveLearn
A lattice formulation of the Atiyah-Patodi-Singer indexAtiyah-Singer index theorem on a lattice without boundary is well understood owing to the seminal work by Hasenfratz et al. But its extension to the system with boundary (the so-called Atiyah-…Hidenori Fukaya, Naoki Kawai, Yoshiyuki Matsuki et al.·Jan 10, 2020SaveLearn
Towards higher order numerical stochastic perturbation computation applied to the twisted Eguchi-Kawai modelWe have evaluated perturbation coefficients of Wilson loops up to O(g8) for the four-dimensional twisted Eguchi-Kawai model using the numerical stochastic perturbation theory (NSPT) in…Antonio González-Arroyo, Issaku Kanamori, Ken-Ichi Ishikawa et al.·Jan 9, 2020SaveLearn
Quantum delocalization of strings with boundary action in Yang-Mills theoryThe width of the quantum delocalization of the QCD strings is investigated in effective string models beyond free Nambu-Goto approximation. We consider two Lorentzian-invariant boundary-terms in the…A. S. Bakry, M. A. Deliyergiyev, A. A. Galal et al.·Jan 8, 2020SaveLearn
Spectroscopy of mesons with bottom quarksPreliminary results for the spectra of excited and exotic bottom mesons are presented. The calculation on a dynamical anisotropic ensemble exploits distillation, enabling the use of a large basis of…Sinéad M. Ryan·Jan 8, 2020SaveLearn
Distance between configurations in MCMC simulations and the geometrical optimization of the tempering algorithmsFor a given Markov chain Monte Carlo (MCMC) algorithm, we define the distance between configurations that quantifies the difficulty of transitions. This distance enables us to investigate MCMC…Masafumi Fukuma, Nobuyuki Matsumoto, Naoya Umeda·Jan 7, 2020SaveLearn
Lattice spectroscopy with focus on exoticsRecent lattice QCD results on the hadron spectroscopy with beauty and charm quarks is reviewed. The focus of the review are exotic hadrons, while non-lattice approaches and conventional hadrons are…Sasa Prelovsek·Jan 6, 2020SaveLearn
Tempered Lefschetz thimble method and its application to the Hubbard model away from half fillingThe tempered Lefschetz thimble method (TLTM) is a parallel-tempering algorithm towards solving the numerical sign problem. It tames both the sign and ergodicity problems simultaneously by tempering…Masafumi Fukuma, Nobuyuki Matsumoto, Naoya Umeda·Jan 6, 2020SaveLearn
Calculation of PCAC mass with Wilson fermion using gradient flowWe calculate the PCAC mass for (2+1) flavor full QCD with Wilson-type quarks. We adopt the Small Flow-time eXpansion (SFtX) method based on the gradient flow which provides us a general way to…Atsushi Baba, Shinji Ejiri, Kazuyuki Kanaya et al.·Jan 6, 2020SaveLearn
A physicist-friendly reformulation of the Atiyah-Patodi-Singer index and its mathematical justificationThe Atiyah-Patodi-Singer index theorem describes the bulk-edge correspondence of symmetry protected topological insulators. The mathematical setup for this theorem is, however, not directly related…Hidenori Fukaya, Mikio Furuta, Shinichiroh Matsuo et al.·Jan 6, 2020SaveLearn
Theoretical and practical progresses in the HAL QCD methodIn this report, we discuss some theoretical and practical progresses in the HAL QCD potential method. We first clarify the issue of the derivative expansion for the non-local potential in the HAL QCD…Sinya Aoki·Jan 4, 2020SaveLearn
Classically Emulated Digital Quantum Simulation of the Schwinger Model with Topological Term via Adiabatic State PreparationWe perform a digital quantum simulation of a gauge theory with a topological term in Minkowski spacetime, which is practically inaccessible by standard lattice Monte Carlo simulations. We focus on…Bipasha Chakraborty, Masazumi Honda, Taku Izubuchi et al.·Jan 2, 2020SaveLearn
The meson spectrum of large N gauge theoriesWe present our preliminary results on the determination of the low lying meson spectrum for pure gauge theory in the large N limit. Some results are also shown for the theory with two flavours of…Margarita García Pérez, Antonio González-Arroyo, Masanori Okawa·Jan 1, 2020SaveLearn
Expectation values of Coherent States for SU(2) Lattice Gauge TheoriesThis article investigates properties of semiclassical Gauge Field Theory Coherent States for general quantum gauge theories. Useful, e.g., for the canonical formulation of Lattice Gauge Theories…Klaus Liegener, Ernst-Albrecht Zwicknagel·Dec 31, 2019SaveLearn
Implementation of the HMC algorithm on the tempered Lefschetz thimble methodThe tempered Lefschetz thimble method (TLTM) is a parallel-tempering algorithm towards solving the numerical sign problem, where the system is tempered by the antiholomorphic gradient flow to tame…Masafumi Fukuma, Nobuyuki Matsumoto, Naoya Umeda·Dec 31, 2019SaveLearn
Kl3 form factors at the physical point on (10.9 fm)3 volumeWe present the calculation of the Kl3 form factors with Nf = 2 + 1 nonperturbatively O(a)-improved Wilson quark action and Iwasaki gauge action at the physical point on a large volume of…Junpei Kakazu, Ken-ichi Ishikawa, Naruhito Ishizuka et al.·Dec 31, 2019SaveLearn
B-meson semileptonic form factors on (2+1+1)-flavor HISQ ensemblesWe report updates to an ongoing lattice-QCD calculation of the form factors for the semileptonic decays B π ν, Bs K ν, B π+ -, and B K + -. The…Z. Gelzer, C. DeTar, A. X. El-Khadra et al.·Dec 31, 2019SaveLearn
Gradient flow equation in SQCDWe propose a supersymmetric gradient flow in N=1 SQCD in four dimensions. The flow equation is derived in the superfield formalism and is also given for component fields of the Wess-Zumino…Daisuke Kadoh, Naoya Ukita·Dec 31, 2019SaveLearn