Gauge-invariant renormalization of fermion bilinears and energy-momentum tensor on the latticeWe study a gauge-invariant renormalization scheme (GIRS) for composite operators, regularized on the lattice, by extending the coordinate space (X-space) scheme proposed some years ago. In this…G. Spanoudes, M. Costa, I. Karpasitis et al.·Nov 6, 2021SaveLearn
Dynamics of the O(4) critical point in QCDWe perform a real-time simulation of the O(4) critical point of QCD, which lies in the dynamic universality class of Model G. The axial charge and the order parameter φa =(σ, π)…Adrien Florio, Eduardo Grossi, Alexander Soloviev et al.·Nov 5, 2021SaveLearn
Scale setting for N = 1 SUSY Yang-Mills at large-N through volume-reduced twisted matrix modelN=1 SUSY Yang-Mills theory is an appealing theoretical framework that has been studied in the literature using different methods, including standard lattice simulations. Among these, the…P. Butti, M. Garcia Perez, A. Gonzalez-Arroyo et al.·Nov 5, 2021SaveLearn
Lattice Constraints on the QCD Chiral Phase Transition at Finite Temperature and Baryon DensityThe thermal restoration of chiral symmetry in QCD is known to proceed by an analytic crossover, which is widely expected to turn into a phase transition with a critical endpoint as the baryon density…Owe Philipsen·Nov 5, 2021SaveLearn
Thermal QCD phase transition and its scaling window from Wilson twisted mass fermionsWe investigate the thermal QCD phase transition and its scaling properties on the lattice. The simulations are performed with Nf=2+1+1 Wilson twisted mass fermions at pion masses from physical up…A. Yu. Kotov, M. P. Lombardo, A. Trunin·Nov 5, 2021SaveLearn
Generalized parton distributions of the proton from lattice QCDGeneralized parton distributions (GPDs) are among the most fundamental quantities for describing the internal structure of hadrons. In this work, we present results on isovector GPDs of the proton…Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou et al.·Nov 5, 2021SaveLearn
Higher partial wave contamination in finite-volume formulae for 1-to-2 transitionsIt is common practice to truncate the finite-volume formula for Kππ, and other one-to-two transitions, to only include the lowest partial wave, as in the original derivation by Lellouch and…Maxwell T. Hansen, Toby Peterken·Nov 4, 2021SaveLearn
Charmonium-like resonances in coupled D D-Ds Ds scatteringCharmonium-like resonances and bound states with isospin zero and JPC=0++,~1--,~2++,~3-- are extracted on the lattice. Coupled D D and Ds Ds scattering suggests three…S. Prelovsek, S. Collins, D. Mohler et al.·Nov 4, 2021SaveLearn
Vcs determination from D KSemileptonic D K decays provide one angle of attack to get at the CKM matrix element Vcs, complementary to the study of leptonic Ds decays. Here, HPQCD present the results of…W. G. Parrott, Bipasha Chakraborty, C. Bouchard et al.·Nov 4, 2021SaveLearn
The asymptotic approach to the continuum of lattice QCD spectral observablesWe consider spectral quantities in lattice QCD and determine the asymptotic behavior of their discretization errors. Wilson fermion with O(a)-improvement, (M\"obius) Domain wall fermion (DWF), and…Nikolai Husung, Peter Marquard, Rainer Sommer·Nov 3, 2021SaveLearn
The static energy in 2+1+1-flavor QCDWe report on the status of the analysis of the static energy in 2+1+1-flavor QCD. The static energy is obtained by measuring Wilson line correlators in Coulomb gauge using the HISQ action, yielding…Sebastian Steinbeißer, Nora Brambilla, Rafael L. Delgado et al.·Nov 3, 2021SaveLearn
With complex Langevin towards the QCD phase diagramWe use complex Langevin simulations to explore the QCD phase diagram over a large range of chemical potentials and temperatures. For our simulations, we use two flavours of dynamical Wilson fermions…Felipe Attanasio, Benjamin Jäger, Felix P. G. Ziegler·Nov 3, 2021SaveLearn
3+1D θ-Term on the Lattice from the Hamiltonian PerspectiveQuantum and tensor network simulations have emerged as prominent sign-problem free approaches to lattice gauge theories. Unlike conventional Markov chain Monte Carlo methods, they are based on the…Angus Kan, Lena Funcke, Stefan Kühn et al.·Nov 3, 2021SaveLearn
A spin-charge flip symmetric fixed point in 2+1d with massless Dirac fermionsWe study a quantum phase transition of electrons on a two-dimensional square lattice. Our lattice model preserves the full O(4) symmetry of free spin-12 Dirac fermions on a…Hanqing Liu·Nov 3, 2021SaveLearn
What is chiral susceptibility probing?In the early days of QCD, the axial U(1) anomaly was considered as a trigger for the breaking of the SU(2)L× SU(2)R symmetry through topological excitations of gluon fields. However, it…JLQCD collaboration, S. Aoki, Y. Aoki et al.·Nov 3, 2021SaveLearn
Numerical simulation of self-dual U(1) lattice field theory with electric and magnetic matterWe study a recently proposed formulation of U(1) lattice field theory with electric and magnetic matter based on the Villain formulation. This discretization allows for a duality that gives rise to…Maria Anosova, Christof Gattringer, Nabil Iqbal et al.·Nov 3, 2021SaveLearn
Lattice QED in external electromagnetic fieldsWe study QED in external electromagnetic fields using methods developed for simulating lattice QCD. Our first project is to simulate QED in a constant (in space and time) external magnetic field on a…D. K. Sinclair, J. B. Kogut·Nov 3, 2021SaveLearn
Conjecture about the QCD phase diagramWe present a phase diagram study of the O(4) model as an effective theory for 2-flavor QCD. In the chiral limit, both theories perform spontaneous symmetry breaking with isomorphic groups, which…José Antonio García-Hernández, Edgar López-Contreras, Elías Natanael Polanco-Euán et al.·Nov 3, 2021SaveLearn
The transversity parton distribution function of the nucleon using the pseudo-distribution approachWe present a determination of the non-singlet transversity parton distribution function (PDF) of the nucleon, normalized with respect to the tensor charge at μ2=2 GeV2 from lattice quantum…Colin Egerer, Christos Kallidonis, Joseph Karpie et al.·Nov 2, 2021SaveLearn
SU(2) gauge theory with Nf=24 quarks at non-zero massWe study SU(2) gauge field theory with Nf=24 quarks. The theory is asymptotically non-free and, at vanishing quark mass, governed by a Gaussian fixed point at long distances. On the other hand, at…Jarno Rantaharju, Tobias Rindlisbacher, Kari Rummukainen et al.·Nov 2, 2021SaveLearn
Complex Langevin: Boundary terms at poles of the driftThe complex Langevin method is a general method to treat systems with complex action, such as QCD at nonzero density. The formal justification relies on the absence of certain boundary terms, both at…Erhard Seiler·Nov 2, 2021SaveLearn
Proton decay matrix elements on the lattice at physical pion massProton decay is a major prediction of Grand-Unified Theories (GUT) and its observation would indicate baryon number violation that is required for baryogenesis. Many decades of searching for proton…Jun-Sik Yoo, Yasumichi Aoki, Peter Boyle et al.·Nov 2, 2021SaveLearn
Role of inhomogeneities in the flattening of the quantum effective potentialWe investigate the role of inhomogeneous field configurations in systems with a spontaneously broken continuous global symmetry. Spontaneous breaking is usually defined as a specific double limit,…Gergely Endrődi, Tamás G. Kovács, Gergely Markó·Nov 2, 2021SaveLearn
Sub-leading conformal dimensions at the O(4) Wilson-Fisher fixed pointIn this work we focus on computing the conformal dimensions D(jL,jR) of local fields that transform in an irreducible representation of SU(2) × SU(2) labeled with (jL,jR) at the O(4)…Debasish Banerjee, Shailesh Chandrasekharan·Nov 1, 2021SaveLearn
Quantum thermalization of gauge theories: chaos, turbulence and universalityIn this talk, we discuss real-time thermalization dynamics of Z2 Lattice Gauge Theory in 2+1 spacetime dimensions. While classical thermalization is commonly associated with chaotic…Niklas Mueller, Torsten V. Zache, Robert Ott·Nov 1, 2021SaveLearn