Settling an old story: solution of the Thirring model in thimble regularizationThimble regularisation of lattice field theories has been proposed as a solution to the infamous sign problem. It is conceptually very clean and powerful, but it is in practice limited by a…Francesco Di Renzo, Kevin Zambello·Sep 6, 2021SaveLearn
Towards high partial waves in lattice QCD with a dumbbell-like operatorAn extended two-hadron operator is developed to extract the spectra of irreducible representations (irreps) in the finite volume. The irreps of the group for the finite volume system are projected…Jia-Jun Wu, Waseem Kamleh, Derek B. Leinweber et al.·Sep 3, 2021SaveLearn
Strange and charm contributions to nucleon charges and momentsWe present preliminary results for strange and charm contributions to nucleon charges and moments. The scalar, axial and tensor charges, and unpolarized first moments are calculated using…Rui Zhang, Tanmoy Bhattacharya, Rajan Gupta et al.·Sep 2, 2021SaveLearn
Large-N limit of two-dimensional Yang--Mills theory with four superchargesWe study the two-dimensional Yang--Mills theory with four supercharges in the large-N limit. By using thermal boundary conditions, we analyze the internal energy and the distribution of scalars. We…Navdeep Singh Dhindsa, Raghav G. Jha, Anosh Joseph et al.·Sep 2, 2021SaveLearn
Exact duality and local dynamics in SU(N) lattice gauge theoryWe construct exact duality transformations in pure SU(N) Hamiltonian lattice gauge theory in (2+1) dimension. This duality is obtained by making a series of iterative canonical transformations on the…Manu Mathur, Atul Rathor·Sep 2, 2021SaveLearn
Conserved charge fluctuations at vanishing net-baryon density from Lattice QCDWe present here continuum extrapolated results for all 2nd order cumulants using the most recent results obtained by the HotQCD collaboration in (2+1)-flavor QCD. We constrain the applicability of…Jishnu Goswami, Frithjof Karsch, Swagato Mukherjee et al.·Sep 1, 2021SaveLearn
Conserving Lattice Gauge Theory for Finite SystemsIn this contribution I discuss a recent proposal of a novel action for lattice gauge theory for finite systems, which accommodates non-periodic spatial boundary conditions. Drawing on the…Alexander Rothkopf·Aug 31, 2021SaveLearn
Charm and beauty in the deconfined plasma from quenched lattice QCDWe present continuum extrapolated results of charmonium and bottomonium correlators in the vector channel at several temperatures below and above Tc. The continuum extrapolation jointly performed…Heng-Tong Ding, Olaf Kaczmarek, Anna-Lena Lorenz et al.·Aug 31, 2021SaveLearn
Calculation of the running coupling in non-Abelian gauge theories from Jarzynski's equalityWe discuss the theoretical foundations of non-equilibrium Monte Carlo simulations based on Jarzynski's equality and present, as an example of application, the determination of the running coupling in…Olmo Francesconi, Marco Panero, David Preti·Aug 30, 2021SaveLearn
High order quark number susceptibilities in hot QCD from lattice EQCDBuilding on the experience of [1], we develop a formalism to construct operators for higher derivatives of the pressure in hot QCD with respect to the quark chemical potential μ. We provide…Kari Rummukainen, Niels Schlusser·Aug 30, 2021SaveLearn
Digital quantum simulation and Pseudoquantum Simulation of Z2 Gauge Higgs ModelWe present a quantum algorithm for digital quantum simulation of the Z2 gauge-Higgs model on a 3× 3 lattice, which is based on Trotter decomposition, the quantum adiabatic…Yiming Ding, Xiaopeng Cui, Yu Shi·Aug 27, 2021SaveLearn
Finite-density lattice QCD and sign problem: current status and open problemsThis an English translation of a review of finite-density lattice QCD. The original version in Japanese appeared in Soryushiron Kenkyu Vol 31 (2020) No. 1.Keitaro Nagata·Aug 27, 2021SaveLearn
An update on QCD+QED simulations with C* boundary conditionsWe present two novelties in our analysis of fully dynamical QCD+QED ensembles with C* boundary conditions. The first one is the explicit computation of the sign of the Pfaffian. We present an…Lucius Bushnaq, Isabel Campos, Marco Catillo et al.·Aug 26, 2021SaveLearn
Minimally doubled fermions and topology in 2DWe use the two-dimensional Schwinger model to investigate how lattice fermions perceive the global topological charge q∈Z of a given gauge background U. After a warm-up part devoted to…Stephan Durr, Johannes H. Weber·Aug 26, 2021SaveLearn
Comparing meson-meson and diquark-antidiquark creation operators for a b b u d tetraquarkWe compare two frequently discussed competing structures for a stable b b u d tetraquark with quantum numbers I(JP) = 0(1+) by considering a meson-meson as well as a…Marc Wagner, Pedro Bicudo, Antje Peters et al.·Aug 26, 2021SaveLearn
Form factors for the processes Bc+ D0 + and Bc+ Ds+ + - ( ) from lattice QCDWe present results of the first lattice QCD calculations of the weak matrix elements for the decays Bc+ D0 + , Bc+ Ds+ + - and $Bc+ Ds+ …Laurence J. Cooper, Christine T. H. Davies, Matthew Wingate·Aug 25, 2021SaveLearn
A variational study of two-nucleon systems with lattice QCDThe low-energy spectrum and scattering of two-nucleon systems are studied with lattice quantum chromodynamics using a variational approach. A wide range of interpolating operators are used: dibaryon…Saman Amarasinghe, Riyadh Baghdadi, Zohreh Davoudi et al.·Aug 24, 2021SaveLearn
Transversity GPDs of the proton from lattice QCDWe present the first calculation of the x-dependence of the isovector transversity generalized parton distributions (GPDs) for the proton within lattice QCD. We compute the matrix elements with…Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou et al.·Aug 24, 2021SaveLearn
Existence and Non-Existence of Doubly Heavy Tetraquark Bound StatesIn this work we investigate the existence of bound states for doubly heavy tetraquark systems QQ'qq' in a full lattice-QCD computation, where heavy bottom quarks are treated in the…Martin Pflaumer, Luka Leskovec, Stefan Meinel et al.·Aug 24, 2021SaveLearn
Spectrum of SU(2) gauge theory at large number of flavorsWe present a numerical study of the spectrum of an asymptotically non-free SU(2) gauge theory with Nf=24 massive fermion flavors. For such large number of flavors, asymptotic freedom is lost and…Jarno Rantaharju, Tobias Rindlisbacher, Kari Rummukainen et al.·Aug 24, 2021SaveLearn
A novel method to evaluate real-time path integral for scalar φ4 theoryWe present a new scheme which numerically evaluates the real-time path integral for φ4 real scalar field theory in a lattice version of the closed-time formalism. First step of the scheme is to…Shinji Takeda·Aug 23, 2021SaveLearn
Lattice simulations of the QCD chiral transition at real baryon densityState-of-the-art lattice QCD studies of hot and dense strongly interacting matter currently rely on extrapolation from zero or imaginary chemical potentials. The ill-posedness of numerical analytic…Szabolcs Borsanyi, Zoltan Fodor, Matteo Giordano et al.·Aug 20, 2021SaveLearn
Local correlation among the chiral condensate, monopoles, and color magnetic fields in Abelian projected QCDUsing the lattice gauge field theory, we study the relation among the local chiral condensate, monopoles, and color magnetic fields in quantum chromodynamics (QCD). First, we investigate idealized…Hideo Suganuma, Hiroki Ohata·Aug 19, 2021SaveLearn
Bottomonium resonances from lattice QCD static-static-light-light potentialsWe study I=0 quarkonium resonances decaying into pairs of heavy-light mesons using static-static-light-light potentials from lattice QCD. To this end, we solve a coupled channel Schr\"odinger…Lasse Mueller, Pedro Bicudo, Nuno Cardoso et al.·Aug 18, 2021SaveLearn
Symmetries of temporal correlators and the nature of hot QCDThe temperature of the chiral restoration phase transition at 130 MeV as well as the temperature of the center symmetry ("deconfinement") phase transition in a pure glue theory at 300 MeV are two…L. Ya. Glozman, Y. Aoki, S. Hashimoto et al.·Aug 18, 2021SaveLearn