Charged particles interaction in both a finite volume and a uniform magnetic fieldA formalism for describing charged particles interaction in both a finite volume and a uniform magnetic field is presented. In the case of short-range interaction between charged particles, we show…Peng Guo, Vladimir Gasparian·Jan 4, 2021SaveLearn
Importance of meson-meson and of diquark-antidiquark creation operators for a b b u d tetraquarkIn recent years, the existence of a hadronically stable b b u d tetraquark with quantum numbers I(JP) = 0(1+) was confirmed by first principles lattice QCD computations. In this…Pedro Bicudo, Antje Peters, Sebastian Velten et al.·Jan 3, 2021SaveLearn
P-wave nucleon-pion scattering amplitude in the (1232) channel from lattice QCDWe determine the (1232) resonance parameters using lattice QCD and the L\"uscher method. The resonance occurs in elastic pion-nucleon scattering with JP=3/2+ in the isospin I = 3/2,…Giorgio Silvi, Srijit Paul, Constantia Alexandrou et al.·Jan 3, 2021SaveLearn
Large-N SU(N) Yang-Mills theories with milder topological freezingWe simulate 4d SU(N) pure-gauge theories at large N using a parallel tempering scheme that combines simulations with open and periodic boundary conditions, implementing the algorithm originally…Claudio Bonanno, Claudio Bonati, Massimo D'Elia·Dec 27, 2020SaveLearn
Excitations of isolated static charges in the charge q=2 abelian Higgs modelWe present lattice Monte Carlo evidence of stable excitations of isolated static charges in the Higgs phase of the charge q=2 abelian Higgs model. These localized excitations are excited states of…Kazue Matsuyama·Dec 27, 2020SaveLearn
On the three-particle analog of the Lellouch-L\"uscher formulaUsing non-relativistic effective field theory, we derive a three-particle analog of the Lellouch-L\"uscher formula at the leading order. This formula relates the three-particle decay amplitudes in a…Fabian Müller, Akaki Rusetsky·Dec 27, 2020SaveLearn
On-shell representations of two-body transition amplitudes: single external currentThis work explores scattering amplitudes that couple two-particle systems via a single external current insertion, 2+J 2. Such amplitudes can provide structural information about the…Raúl A. Briceño, Andrew W. Jackura, Felipe G. Ortega-Gama et al.·Dec 24, 2020SaveLearn
Reconfinement, localization and thermal monopoles in SU(3) trace-deformed Yang-Mills theoryWe study, by means of numerical lattice simulations, the properties of the reconfinement phase transition taking place in trace deformed SU(3) Yang-Mills theory defined on R3× S1,…Claudio Bonati, Marco Cardinali, Massimo D'Elia et al.·Dec 24, 2020SaveLearn
Lattice gauge equivariant convolutional neural networksWe propose Lattice gauge equivariant Convolutional Neural Networks (L-CNNs) for generic machine learning applications on lattice gauge theoretical problems. At the heart of this network structure is…Matteo Favoni, Andreas Ipp, David I. Müller et al.·Dec 23, 2020SaveLearn
Variations on the Maiani-Testa approach and the inverse problemWe discuss a method to construct hadronic scattering and decay amplitudes from Euclidean correlators, by combining the approach of a regulated inverse Laplace transform with the work of Maiani and…Mattia Bruno, Maxwell T. Hansen·Dec 21, 2020SaveLearn
Lattice-fermionic Casimir effect and topological insulatorsThe Casimir effect arises from the zero-point energy of particles in momentum space deformed by the existence of two parallel plates. For degrees of freedom on the lattice, its energy-momentum…Tsutomu Ishikawa, Katsumasa Nakayama, Kei Suzuki·Dec 21, 2020SaveLearn
Automatic differentiation for error analysisWe present ADerrors.jl, a software for linear error propagation and analysis of Monte Carlo data. Although the focus is in data analysis in Lattice QCD, where estimates of the observables have to be…Alberto Ramos·Dec 21, 2020SaveLearn
Proper static potential in classical lattice gauge theory at finite TWe compute the proper real-time interaction potential between a static quark and antiquark in classical lattice gauge theory at finite temperature. Our central result is the determination of the…Alexander Lehmann, Alexander Rothkopf·Dec 18, 2020SaveLearn
Kinetic Factors in Affine Quantization and Their Role in Field Theory Monte CarloAffine quantization, which is a parallel procedure with canonical quantization, needs to use its principal quantum operators, most simply D=(PQ+QP)/2 and Q≠0, to represent appropriate kinetic…Riccardo Fantoni, John R. Klauder·Dec 18, 2020SaveLearn
Scattering of Goldstone Bosons and resonance production in a Composite Higgs model on the latticeWe calculate the coupling between a vector resonance and two Goldstone bosons in SU(2) gauge theory with Nf=2 Dirac fermions in the fundamental representation. The considered theory can be used…Vincent Drach, Tadeusz Janowski, Claudio Pica et al.·Dec 17, 2020SaveLearn
Regulator dependence of inhomogeneous phases in the 2+1-dimensional Gross-Neveu modelThe phase diagram of the Gross-Neveu model in 2+1 space-time dimensions at non-zero temperature and chemical potential is studied in the limit of infinitely many flavors, focusing on the possible…Michael Buballa, Lennart Kurth, Marc Wagner et al.·Dec 17, 2020SaveLearn
Worldvolume approach to the tempered Lefschetz thimble methodAs a solution towards the numerical sign problem, we propose a novel Hybrid Monte Carlo algorithm, in which molecular dynamics is performed on a continuum set of integration surfaces foliated by the…Masafumi Fukuma, Nobuyuki Matsumoto·Dec 15, 2020SaveLearn
The sphaleron rate from Euclidean lattice correlators: an explorationWe show how the sphaleron rate (the Minkowski rate for topological charge diffusion) can be determined by analytical continuation of the Euclidean topological-charge-density two-point function, which…Luis Altenkort, Alexander M. Eller, Olaf Kaczmarek et al.·Dec 15, 2020SaveLearn
Chemical potential on the lattice: Universal or Unique?Lattice techniques are the most reliable ones to investigate non-perturbative aspects of quantum chromodynamics (QCD) such as its phase diagram in the temperature-baryon density plane. They are,…Rajiv V. Gavai·Dec 14, 2020SaveLearn
Nonperturbative Renormalization in Lattice QCD with three Flavors of Clover Fermions: Using Periodic and Open Boundary ConditionsWe present the nonperturbative computation of renormalization factors in the RI'-(S)MOM schemes for the QCD gauge field ensembles generated by the CLS (coordinated lattice simulations) effort with…G. S. Bali, S. Bürger, S. Collins et al.·Dec 11, 2020SaveLearn
Gluons in charmoniumlike statesThe mass components of charmoniumlike states are investigated through the decomposition of QCD energy-momentum tensor (EMT) on lattice. The quark mass contribution Hm and the…Wei Sun, Ying Chen, Peng Sun et al.·Dec 11, 2020SaveLearn
Strong coupling constant from moments of quarkonium correlators revisitedWe revisit previous determination of the strong coupling constant from moments of quarkonium correlators in (2+1)-flavor QCD. We use previously calculated moments obtained with Highly Improved…Peter Petreczky, Johannes Heinrich Weber·Dec 11, 2020SaveLearn
RI/MOM renormalization of the quasi-PDF in lattice regularizationWe analyze the lattice spacing dependence for the pion unpolarized matrix element of a quark bilinear operator with Wilson link (quasi-PDF operator) in the rest frame, using 13 lattice spacings…Kuan Zhang, Yuan-Yuan Li, Yi-Kai Huo et al.·Dec 10, 2020SaveLearn
Quantum Algorithms for Open Lattice Field TheoryCertain aspects of some unitary quantum systems are well-described by evolution via a non-Hermitian effective Hamiltonian, as in the Wigner-Weisskopf theory for spontaneous decay. Conversely, any…Jay Hubisz, Bharath Sambasivam, Judah Unmuth-Yockey·Dec 9, 2020SaveLearn
Numerical Study of the Chiral Separation Effect in Two-Color QCD at Finite DensityWe study the Chiral Separation Effect (CSE) in finite-density SU(2) lattice gauge theory with dynamical quarks. We find that the CSE is well described by the free quark result in the high-temperature…P. V. Buividovich, D. Smith, L. von Smekal·Dec 9, 2020SaveLearn