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Nuclear Theory·nucl-th

Tuesday·February 16, 2016

7 papers—5 primary·2 cross-listed

All7Primary5Cross-lists2
  1. 06

    Empirical formula of crustal torsional oscillations

    Hajime Sotani🇯🇵

    Crustal torsional oscillations depend on not only crust properties but also the stellar mass and radius. Thus, one could extract stellar information by identifying the observed frequencies of stellar oscillations with the crustal torsional oscillations. Owing to the confinement of torsional oscillations inside the crust region of neutron stars, we successfully derive an empirical formula for the fundamental crustal torsional oscillations as a function of the stellar mass, radius, the so-called slope parameter of the nuclear symmetry energy, and the angular index of oscillations, with which one can estimate the frequencies with high accuracy. This empirical formula could be valuable in both the astrophysics and nuclear physics communities.

    ↳ astro-ph.HEnucl-thPRD(2016)·16 citations
  2. 07

    Quantum-classical hybrids in a simplified model of QED and geometric phase induced by charged particle trajectory

    T. Koide🇧🇷

    We derive a model of quantum-classical hybrids for a simplified model of quantum electrodynamics in the framework of the stochastic variational method. In this model, charged particle trajectories are affected by the interaction with quantized electromagnetic fields, and this quantum-classical interaction induces a displacement current. We further investigate a geometric phase in the wave functional of the gauge field configuration, which is induced by adiabatic motions of the charged particles. This phase contains the quantum-classical backreaction effect and usual Berry's phase is reproduced in the vanishing limit of the fluctuation of the charged particle trajectories.

    ↳ quant-phgr-qchep-thnucl-th0 citations

Affiliations

first authorsco-authorsvia INSPIRE