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Nuclear Theory·nucl-th

Monday·August 17, 2015

5 papers—2 primary·3 cross-listed

All5Primary2Cross-lists3
  1. 03

    [Submitted on 10 Aug 2015] (cross-list from hep-th)

    The no-drag frame for anomalous chiral fluid

    Mikhail A. Stephanov🇺🇸 · Ho-Ung Yee🇺🇸

    We show that for an anomalous fluid carrying dissipationless chiral magnetic and/or vortical currents there is a frame in which a stationary obstacle experiences no drag, but energy and charge currents do not vanish, resembling superfluidity. However, unlike ordinary superfluid flow, the anomalous chiral currents do transport entropy in this frame. We show that the second law of thermodynamics completely determines the amounts of these anomalous non-dissipative currents in the "no-drag frame" as polynomials in temperature and chemical potential with known anomaly coefficients. These general results are illustrated and confirmed by a calculation in the chiral kinetic theory and quark-gluon plasma at high temperature.

    Comments:
    5 pages (v2 with minor bug fixes)
    Subjects:
    High Energy Physics — Theory (hep-th); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Nuclear Theory (nucl-th)
    arXiv:
    1508.02396 [pdf]
    PRL(2016)·46 citations
  2. 04

    [Submitted on 21 Jan 2015] (cross-list from hep-ph)

    The Helicity Amplitude for and Baryon in the Pseudo-Meson Photoproduction in the Quark Model

    Leihua Liu🇳🇱 · Liye Xiao🇨🇳

    We derive the separate helicity amplitudes involving the partial wave analysis in the process of pseudo-scalar meson photon productions with , which is independent on model. According to parity, the general amplitude in the case of is given out. We prove this general amplitude is corresponding to the situation of as adopting the circular polarization. Finally, the formulas of scattering amplitudes involving the photon-meson production with are obtained from the chiral quark model.

    Comments:
    Since my former supervisor require me to withdraw this paper
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1508.03370 [pdf]
    0 citations
  3. 05

    [Submitted on 14 Aug 2015] (cross-list from hep-ph)

    Solving the Balitsky-Kovchegov equation at next to leading order accuracy

    T. Lappi🇫🇮 · H. Mäntysaari🇫🇮

    We present the first numerical solution to the next to leading order Balitsky-Kovchegov (BK) equation in coordinate space in the large- limit. In addition to the dipole operator we also solve the evolution of the "conformal dipole" for which the conformal invariance breaking double logarithmic term is absent from the evolution equation. The NLO corrections are shown to slow down the evolution. We show that the solution depends strongly on the details of the initial condition, and that the solution to the equation is not positive definite with all initial conditions relevant for phenomenological applications.

    Comments:
    4 pages, 4 figures. Talk given by H.M. at the 7th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2015)
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1508.03434 [pdf]
    Nucl.Part.Phys.Proc.(2016)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE