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High Energy Physics - Lattice

New submissions

[ total of 12 entries: 1-12 ]
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New submissions for Thu, 29 Feb 24

[1]  arXiv:2402.18038 [pdf, other]
Title: Infrared fixed point in the massless twelve-flavor SU(3) gauge-fermion system
Comments: 11 pages, 8 figures, 1 table
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)

We present strong numerical evidence for the existence of an infrared fixed point in the renormalization group flow of the SU(3) gauge-fermion system with twelve massless fermions in the fundamental representation. Our numerical simulations using nHYP-smeared staggered fermions with Pauli-Villars improvement do not exhibit any first-order bulk phase transition in the investigated parameter region. We utilize an infinite volume renormalization scheme based on the gradient flow transformation to determine the renormalization group $\beta$ function. We identify an infrared fixed point at $g^2_{\mathrm{GF}\star}=6.69(68)$ in the GF scheme and calculate the leading irrelevant critical exponent $\gamma_{g}^{\star}=0.204(36)$. Our prediction for $\gamma_{g}^{\star}$ is consistent with available literature at the $1\mbox{-}2\sigma$ level.

[2]  arXiv:2402.18429 [pdf, other]
Title: Real-time scattering in the lattice Schwinger model
Comments: 10 pages, 6 figures
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); Quantum Physics (quant-ph)

Tensor network methods have demonstrated their suitability for the study of equilibrium properties of lattice gauge theories, even close to the continuum limit. We use them in an out-of-equilibrium scenario, much less explored so far, by simulating the real-time collisions of composite mesons in the lattice Schwinger model. Constructing wave-packets of vector mesons at different incoming momenta, we observe the opening of the inelastic channel in which two heavier mesons are produced and identify the momentum threshold. To detect the products of the collision in the strong coupling regime we propose local quantitites that could be measured in current quantum simulation platforms.

Cross-lists for Thu, 29 Feb 24

[3]  arXiv:2312.17228 (cross-list from hep-ph) [pdf, ps, other]
Title: Next-to-next-to-leading-order QCD corrections to pion electromagnetic form factors
Comments: v2, 9 pages, 2 tables, 3 figures
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat)

We investigate the next-to-next-to-leading order (NNLO) QCD radiative corrections to the pion electromagnetic form factor with large momentum transfer. We explicitly verify the validity of the collinear factorization to two-loop order for this observable, and obtain the respective IR-finite two-loop hard-scattering kernel in the closed form. The NNLO QCD correction turns to be positive and significant. Incorporating this new ingredient of correction, we then make a comprehensive comparison between the finest theoretical predictions and numerous pion form factor measurements in both space-like and time-like regions. Our phenomenological analysis provides strong constraint on the second Gegenbauer moment of the pion light-cone distribution amplitude (LCDA) obtained from recent lattice QCD studies.

Replacements for Thu, 29 Feb 24

[4]  arXiv:2306.12998 (replaced) [pdf, other]
Title: Transversity distributions and tensor charges of the nucleon: extraction from dihadron production and their universal nature
Comments: 7 pages, 2 figures
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat)
[5]  arXiv:2307.02522 (replaced) [pdf, other]
Title: High-Energy Collision of Quarks and Mesons in the Schwinger Model: From Tensor Networks to Circuit QED
Comments: 5+12 pages, 4+6 figures, close to published version
Subjects: Quantum Physics (quant-ph); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
[6]  arXiv:2308.13294 (replaced) [pdf, other]
Title: Training normalizing flows with computationally intensive target probability distributions
Comments: 16 pages, 5 figures, 6 tables, 3 listings. Revised version as published in CPC. Added results for a other values of hoping parameter
Journal-ref: Computer Physics Communications 2024 109094
Subjects: Machine Learning (cs.LG); Statistical Mechanics (cond-mat.stat-mech); High Energy Physics - Lattice (hep-lat)
[7]  arXiv:2308.14857 (replaced) [pdf, other]
Title: First simultaneous global QCD analysis of dihadron fragmentation functions and transversity parton distribution functions
Comments: 34 pages, 24 figures
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
[8]  arXiv:2312.02945 (replaced) [pdf, other]
Title: The Chiral Separation Effect from lattice QCD at the physical point
Comments: 26 pages, 8 figures
Journal-ref: JHEP 02 (2024) 142
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th); Nuclear Theory (nucl-th)
[9]  arXiv:2401.07151 (replaced) [pdf, ps, other]
Title: Properties of doubly heavy spin-$\frac{1}{2}$ baryons: The ground and excited states
Comments: 18 Pages, 5 Figures and 9 Tables
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat)
[10]  arXiv:2401.14899 (replaced) [pdf, other]
Title: Benchmark calculations of fully heavy compact and molecular tetraquark states
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat); Nuclear Theory (nucl-th)
[11]  arXiv:2402.07362 (replaced) [pdf, other]
Title: Exploring Composite Dark Matter with an SU(4) gauge theory with 1 fermion flavor
Comments: Proceedings: The 40th International Symposium on Lattice Field Theory (Lattice 2023) July 31st - August 4th, 2023 Fermi National Accelerator Laboratory. 8 pages
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph)
[12]  arXiv:2402.12985 (replaced) [pdf, other]
Title: Lüscher equation with long-range forces
Comments: 28 pages, 4 figures
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
[ total of 12 entries: 1-12 ]
[ showing up to 2000 entries per page: fewer | more ]

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