Nucleon sigma terms with a variational analysis from Lattice QCDWe determine the nucleon-sigma terms from lattice QCD. We find that the dominant excited state contamination in the nucleon three-point function with a scalar current is due to the transition between…Lorenzo Barca, Gunnar Bali, Sara Collins·Dec 17, 2024SaveLearn
Constraining fermionic condensatesWe study spontaneous symmetry breaking in quantum field theories with fermionic order parameters and construct, for the first time in the literature, the constraint effective potential for it. The…Gergely Endrődi, Tamás G. Kovács, Gergely Markó et al.·Dec 17, 2024SaveLearn
Super-Resolving Normalising Flows for Lattice Field TheoriesWe propose a renormalisation group inspired normalising flow that combines benefits from traditional Markov chain Monte Carlo methods and standard normalising flows to sample lattice field theories.…Marc Bauer, Renzo Kapust, Jan M. Pawlowski et al.·Dec 17, 2024SaveLearn
Measurement of the TMD soft function on the lattice using the auxiliary field representation of the Wilson lineThe transverse momentum dependent (TMD) soft function and Collins-Soper (CS) kernel may be obtained by formulating the Wilson line in terms of auxiliary one-dimensional fermion fields on the lattice.…Anthony Francis, Issaku Kanamori, C. -J. David Lin et al.·Dec 17, 2024SaveLearn
Hadronic light-by-light contribution to the muon g-2 using twisted-mass fermionsWe report on our preliminary results from the lattice-QCD computation of the hadronic light-by-light (HLbL) contribution to the anomalous magnetic moment of the muon. We use twisted-mass $Nf = 2 + 1…Nikolaos Kalntis, Gurtej Kanwar, Marcus Petschlies et al.·Dec 16, 2024SaveLearn
Effective String Theory of three-dimensional SU(N) gauge theories beyond the Nambu--Got\=o approximationWe study the effective bosonic string that describes confining flux tubes in three-dimensional SU(N) Yang--Mills theories. Although the low-energy properties are universal and well described by the…Michele Caselle, Nicodemo Magnoli, Alessandro Nada et al.·Dec 16, 2024SaveLearn
Quantum sampling on a quantum annealer for large volumes in the strong coupling limit for gauge group U(3)In our previous studies [1, 2], we confirmed that a quantum annealer can be used for importance sampling of gauge theories. In this paper, we extend the previous results to larger 2-dimensional and…Jangho Kim, Thomas Luu, Wolfgang Unger·Dec 16, 2024SaveLearn
Graph Attention Hamiltonian Neural Networks: A Lattice System Analysis Model Based on Structural LearningA deep understanding of the intricate interactions between particles within a system is a key approach to revealing the essential characteristics of the system, whether it is an in-depth analysis of…Ru Geng, Yixian Gao, Jian Zu et al.·Dec 14, 2024SaveLearn
What do we know about the confinement mechanism?Color confinement is a fundamental phenomenon in quantum chromodynamics. In this work, the mechanisms underlying color confinement are investigated in detail, with a particular focus on the role of…Zeinab Dehghan, Manfried Faber·Dec 14, 2024SaveLearn
Designing weight regularizations based on Lefschetz thimbles to stabilize complex LangevinThe complex Langevin (CL) method shows significant potential in addressing the numerical sign problem. Nonetheless, it often produces incorrect results when used without any stabilization techniques.…Kirill Boguslavski, Paul Hotzy, David I. Müller·Dec 14, 2024SaveLearn
Investigating SU(3) with Nf=8 fundamental fermions at strong renormalized couplingLattice simulations have observed a novel strong coupling symmetric mass generation (SMG) phase for the SU(3) gauge system with Nf=8 fundamental fermions (represented by two sets of staggered…Anna Hasenfratz, Oliver Witzel·Dec 13, 2024SaveLearn
The determination of potential scales in 2+1 flavor QCDWe calculate the hadronic scales r0, r1 and their ratio r0/r1 on N f=2+1 flavor QCD ensembles generated by the CLS consortium. These scales are determined from a tree-level improved…Tom Matty Bo Asmussen, Roman Höllwieser, Francesco Knechtli et al.·Dec 13, 2024SaveLearn
Towards the phase diagram of fermions coupled with SO(3) quantum links in (2+1)-DQuantum link models (QLMs) are generalizations of Wilson's lattice gauge theory formulated with finite-dimensional link Hilbert spaces. In certain cases, the non-Abelian Gauss Law constraint can be…Graham Van Goffrier, Debasish Banerjee, Bipasha Chakraborty et al.·Dec 12, 2024SaveLearn
Distillation and position-space sampling for local multiquark interpolatorsDistillation in lattice QCD is a smearing method that uses the lowest eigenvectors of the spatial Laplacian to construct a subspace in which the Dirac operator can be fully inverted. However, local…Andres Stump, Jeremy R. Green·Dec 12, 2024SaveLearn
Symplectic Quantization and Minkowskian Statistical Mechanics: simulations on a 1+1 latticeWe introduce symplectic quantization, a novel functional approach to quantum field theory which allows to sample quantum fields fluctuations directly in Minkowski space-time, at variance with the…Martina Giachello, Giacomo Gradenigo, Francesco Scardino·Dec 12, 2024SaveLearn
Topological data analysis of the deconfinement transition in SU(3) lattice gauge theoryWe study the confining and deconfining phases of pure SU(3) lattice gauge theory with topological data analysis. This provides unique insights into long range correlations of field…Daniel Spitz, Julian M. Urban, Jan M. Pawlowski·Dec 12, 2024SaveLearn
Physical interpretation of the 2s excitation of the nucleonLattice QCD calculations of the 2s radial excitation of the nucleon place the state at an energy of approximately 1.9 GeV, raising the possibility that it is associated with the N1/2+(1880) and…Finn M. Stokes, Waseem Kamleh, Derek B. Leinweber et al.·Dec 12, 2024SaveLearn
Magnetic polarisability of octet baryons near the physical quark-mass pointThe magnetic polarisabilities of octet baryons are calculated close to the physical quark-mass point using the background field method in lattice QCD. This first calculation draws on the…Thomas Kabelitz, Waseem Kamleh, Derek Leinweber·Dec 12, 2024SaveLearn
Grassmann tensor renormalization group for the massive Schwinger model with a θ term using staggered fermionsWe use the Grassmann tensor renormalization group method to investigate the Nf=2 Schwinger model with the staggered fermions in the presence of a 2π periodic θ term in a broad range of…Hayato Kanno, Shinichiro Akiyama, Kotaro Murakami et al.·Dec 12, 2024SaveLearn
Axion QED as a Lattice Gauge Theory and Non-Invertible SymmetryWe investigate the non-invertible symmetry associated with chiral symmetry in axion quantum electrodynamics (QED) using the modified Villain formulation. In axion QED, it is known that naive magnetic…Yamato Honda, Soma Onoda, Hiroshi Suzuki·Dec 11, 2024SaveLearn
The center-symmetric Landau gauge meets the latticeA lattice implementation of the recently introduced center-symmetric Landau gauge is discussed and its predictions confronted with numerical Monte Carlo simulations. It is shown that the link average…Duifje Maria van Egmond, Orlando Oliveira, Urko Reinosa et al.·Dec 10, 2024SaveLearn
Investigation of π N contributions to nucleon matrix elementsWe investigate an improved method to extract nucleon matrix elements from lattice 3-point functions using a generalized eigenvalue problem (GEVP) with nucleon and pion-nucleon interpolating fields.…Constantia Alexandrou, Giannis Koutsou, Yan Li et al.·Dec 10, 2024SaveLearn
Prediction of an I(JP)=0(1-) bbud Tetraquark Resonance Close to the B B Threshold Using Lattice QCD PotentialsWe use antistatic-antistatic potentials computed with lattice QCD and a coupled-channel Born-Oppenheimer approach to explore the existence of a b b u d tetraquark resonance with quantum…Jakob Hoffmann, Marc Wagner·Dec 9, 2024SaveLearn
Study of symmetries in finite temperature Nf=2 QCD with M\"obius Domain Wall FermionsWe report on the ongoing study of symmetry of Nf=2 QCD around the critical temperature. Our simulations of Nf = 2 QCD employ the M\"obius domain-wall fermion action with residual mass $…David Ward, Sinya Aoki, Yasumichi Aoki et al.·Dec 9, 2024SaveLearn
Determination of the pseudoscalar decay constant from SU(2) with two fundamental flavorsThe SU(2) gauge group with two fundamental flavors is a candidate for a composite Higgs extension of the Standard Model. Central to Higgs phenomenology is a non-perturbative determination of…Laurence Sebastian Bowes, Vincent Drach, Patrick Fritzsch et al.·Dec 9, 2024SaveLearn