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Nuclear Theory·nucl-th

Thursday·October 12, 2017

13 papers—11 primary·2 cross-listed

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  1. 12

    [Submitted on 10 Oct 2017] (cross-list from hep-th)

    Global Anomalies, Discrete Symmetries, and Hydrodynamic Effective Actions

    Paolo Glorioso🇺🇸 · Hong Liu🇺🇸 · Srivatsan Rajagopal🇺🇸

    We derive effective actions for parity-violating fluids in both and dimensions, including those with anomalies. As a corollary we confirm the most general constitutive relations for such systems derived previously using other methods. We discuss in detail connections between parity-odd transport and underlying discrete symmetries. In (3+1) dimensions we elucidate connections between anomalous transport coefficients and global anomalies, and clarify a previous puzzle concerning transports and local gravitational anomalies.

    Comments:
    48 pages, 1 figure. v2: Updated references
    Subjects:
    High Energy Physics — Theory (hep-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1710.03768 [pdf]
    JHEP(2019)·78 citations
  2. 13

    [Submitted on 11 Oct 2017] (cross-list from cond-mat.quant-gas)

    Three-body scattering hypervolumes of particles with short-range interactions

    Shangguo Zhu · Shina Tan

    The low-energy scattering of three bosons or distinguishable particles with short-range interactions is characterized by a fundamental parameter, the three-body scattering hypervolume. Its imaginary part is directly related to the three-body recombination rate in a quantum gas consisting of such particles. We derive an analytical formula of it for weak interactions, and perform its first numerical calculations for bosons with a variable nonzero-range potential. For attractive interactions, we identify several three-body resonances at which the three-body scattering hypervolume becomes divergent or anomalously large.

    Comments:
    5 pages, 2 figures
    Subjects:
    Quantum Gases (cond-mat.quant-gas); Nuclear Theory (nucl-th); Atomic Physics (physics.atom-ph); Quantum Physics (quant-ph)
    arXiv:
    1710.04147 [pdf]
    11 citations

Affiliations

first authorsco-authorsvia INSPIRE