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Nuclear Theory·nucl-th

Wednesday·March 21, 2018

2 papers—1 primary·1 cross-listed

All2Primary1Cross-lists1
  1. 01

    [Submitted on 20 Mar 2018]

    Functional renormalization-group calculation of the equation of state of one-dimensional nuclear matter inspired by the Hohenberg--Kohn theorem

    Takeru Yokota🇯🇵 · Kenichi Yoshida🇯🇵 · Teiji Kunihiro🇯🇵

    We present the first successful functional renormalization group(FRG)-aided density-functional (DFT) calculation of the equation of state (EOS) of an infinite nuclear matter (NM) in (1+1)-dimensions composed of spinless nucleons. We give a formulation to describe infinite matters in which the 'flowing' chemical potential is introduced to control the particle number during the flow. The resultant saturation energy of the NM coincides with that obtained by the Monte-Carlo method within a few percent. Our result demonstrates that the FRG-aided DFT can be as powerful as any other methods in quantum many-body theory.

    Comments:
    9 pages, 3 figures, v3: revised for submission as regular article
    Subjects:
    Nuclear Theory (nucl-th); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Strongly Correlated Electrons (cond-mat.str-el); High Energy Physics — Theory (hep-th)
    arXiv:
    1803.07439 [pdf]
    PRC(2019)·24 citations
  2. 02

    [Submitted on 20 Mar 2018] (cross-list from hep-ph)

    Does the chiral magnetic effect change the dynamic universality class in QCD?

    Masaru Hongo🇯🇵 · Noriyuki Sogabe🇯🇵 · Naoki Yamamoto🇯🇵

    In QCD matter under an external magnetic field, the chiral magnetic effect (CME) leads to the collective gapless mode called the chiral magnetic wave (CMW). Since dynamic universality class generally depends on low-energy gapless modes, it is nontrivial whether the CME and the resulting CMW change that of the second-order chiral phase transition in QCD. To address this question, we study the critical dynamics near the chiral phase transition in massless two-flavor QCD under an external magnetic field. By performing the dynamic renormalization-group analysis within the epsilon expansion, we find that the presence of the CME changes the dynamic universality class to that of model A. We also show that the transport coefficient of the CME is not renormalized by the critical fluctuations of the order parameter.

    Comments:
    32 pages, 8 figures; v2: title and abstract modified, main results changed, discussions substantially extended, published in JHEP
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Statistical Mechanics (cond-mat.stat-mech); Nuclear Theory (nucl-th)
    arXiv:
    1803.07267 [pdf]
    JHEP(2018)·6 citations

Affiliations

first authorsco-authorsvia INSPIRE