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Nuclear Theory·nucl-th

Thursday·September 6, 2018

9 papers—6 primary·3 cross-listed

All9Primary6Cross-lists3
  1. 07

    [Submitted on 5 Sept 2018] (cross-list from hep-ph)

    Transverse momentum broadening and collinear radiation at NLO in the SYM plasma

    Jacopo Ghiglieri🇨🇭 · HyungJoo Kim🇨🇭

    We compute O(g) NLO corrections to the transverse scattering kernel and transverse momentum broadening coefficient of weakly-coupled SYM. Based on this, we also compute NLO correction to the collinear splitting rates. For we find that the NLO/LO ratio is similar to the QCD one, with large NLO corrections. This is contrasted by our findings for the collinear splitting rate, which show a much better convergence in SYM than in QCD, providing further support to earlier expectations that NLO corrections have signs and relative magnitudes controlled by the specifics of the theory. We also compare the ratio of in QCD and in theory to strong coupling expectations.

    Comments:
    22 pages plus appendices, 12 figures. v2: minor changes, version accepted for publication on JHEP
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    1809.01349 [pdf]
    JHEP(2018)·22 citations
  2. 08

    [Submitted on 4 Sept 2018] (cross-list from cond-mat.str-el)

    Chiral anomaly in Weyl systems: no violation of classical conservation laws

    Klaus Morawetz🇩🇪

    The anomalous term in the balance of the chiral density can be rewritten as quantum current in the classical balance of density. Therefore it does not violate classical conservation laws as it is claimed to be caused by quantum fluctuations.

    Comments:
    3 pages. arXiv admin note: substantial text overlap with arXiv:1806.06214
    Subjects:
    Strongly Correlated Electrons (cond-mat.str-el); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Nuclear Theory (nucl-th)
    arXiv:
    1809.01547 [pdf]
    PLA(2019)·3 citations
  3. 09

    [Submitted on 5 Sept 2018] (cross-list from hep-ph)

    Strangeness neutrality and baryon-strangeness correlations

    Wei-jie Fu🇨🇳 · Jan M. Pawlowski🇩🇪 · Fabian Rennecke🇺🇸

    We derive a simple relation between strangeness neutrality and baryon-strangeness correlations. In heavy-ion collisions, the former is a consequence of quark number conservation of the strong interactions while the latter are sensitive probes of the character of QCD matter. This relation allows us to directly extract baryon-strangeness correlations from the strangeness chemical potential at strangeness neutrality. The explicit calculations are performed within a low energy theory of QCD with 2+1 dynamical quark flavors at finite temperature and density. Non-perturbative quark and hadron fluctuations are taken into account within the functional renormalization group. The results show the pronounced sensitivity of baryon-strangeness correlations on the QCD phase transition and the crucial role that strangeness neutrality plays for this observable.

    Comments:
    5 pages, 3 figures; published version
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1809.01594 [pdf]
    PRD(2019)·39 citations

Affiliations

first authorsco-authorsvia INSPIRE