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Nuclear Theory·nucl-th

Wednesday·April 28, 2021

7 papers—5 primary·2 cross-listed

All7Primary5Cross-lists2
  1. 06

    [Submitted on 26 Apr 2021] (cross-list from hep-ph)

    A Beyond Mean Field Approach to Yang-Mills Thermodynamics

    Pracheta Singha🇮🇳 · Rajarshi Ray🇮🇳 · Chowdhury Aminul Islam🇨🇳 · Munshi G Mustafa🇮🇳

    We propose a beyond mean field approach to evaluate Yang-Mills thermodynamics from the partition function with n-body gluon contribution, in the presence of a uniform background Polyakov field. Using a path integral based formalism, we obtain, unlike the previous mean field studies within this model framework, physically consistent results with good agreement to the lattice data throughout the temperature range.

    Comments:
    4 pages, 3 captioned figures, Proceedings of the contributory talk at XXIV DAE-BNRS High Energy Physics Symposium 2020 held at NISER, Bhubaneswar, Odisha
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2104.12814 [pdf]
    Springer Proc.Phys.(2022)·1 citation
  2. 07

    [Submitted on 27 Apr 2021] (cross-list from hep-ph)

    Renormalization and Mixing of Staple-Shaped Wilson Line Operators on the Lattice Revisited

    Yao Ji🇩🇪 · Jian-Hui Zhang🇨🇳 · Shuai Zhao🇺🇸 · Ruilin Zhu🇨🇳

    Transverse-momentum-dependent parton distribution functions and wave functions (TMDPDFs/TMDWFs) can be extracted from lattice calculations of appropriate Euclidean matrix elements of staple-shaped Wilson line operators. We investigate the mixing pattern of such operators under lattice renormalization using symmetry considerations. We perform an analysis for operators with all Dirac structures, which reveals mixings that are not present in one-loop lattice perturbation theory calculations. We also present the relevant one-loop matching in a renormalization scheme that does not introduce extra non-perturbative effects at large distances, both for the TMDPDFs and for the TMDWFs. Our results have the potential to greatly facilitate numerical calculations of TMDPDFs and TMDWFs on the lattice.

    Comments:
    8 pages, version published in Phys. Rev. D
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Lattice (hep-lat); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2104.13345 [pdf]
    PRD(2021)·27 citations

Affiliations

first authorsco-authorsvia INSPIRE