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Nuclear Theory·nucl-th

Friday·June 21, 2019

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 01

    Electromagnetic stress on nucleon structure

    Benjamin Koch🇨🇱

    External electromagnetic fields can provoke stress, and thus modifications of the internal structure of nucleons. Working with this hypothesis, one can derive a simple description of the charge dependence of the EMC effect. This first result is confirmed by two explicit models of the structure functions of deformed nucleons in the atomic nucleus. For large nuclei a continuous model is used. For small nuclei a discrete distribution of nuclear matter gives better results.

    nucl-thhep-phNPA(2020)·1 citation
  2. 02

    Bag-type Model with Fractal Structure

    Evandro Andrade II🇧🇷 · Airton Deppman🇧🇷 · Eugenio Megias🇪🇸 · Débora P. Menezes🇧🇷 · Tiago Nunes da Silva🇧🇷

    In this work we present a bag-type model within a non-extensive statistics applied to the description of the properties of a hadronic system with an underlying fractal structure. The non-extensive ideal gas inside the bag is determined by the grand canonical partition function from which pressure, energy and particle density as well as temperature and chemical potential are obtained for the hadronic system. These quantities are studied in the approximation of fixed mass for all bag constituents but also for discrete and continuum masses. In all cases, the freeze-out line, corresponding to the energy per particle equal to 1 GeV and the lines corresponding to a fractal structure inside the proton volume are obtained. Finally, the pressure on the bag surface of the proton is calculated and the resulting value obtained.

    nucl-thhep-phPRD(2020)·11 citations
  3. 03

    The Structure of the Hadron-Quark Reaction Zone

    Amir Ouyed🇨🇦 · Rachid Ouyed🇨🇦 · Prashanth Jaikumar🇺🇸

    Hadron-quark combustion in dense matter is a central topic in the study of phases in compact stars and their high-energy astrophysics. We critically review the literature on hadron-quark combustion, dividing them into a "first wave" that treats the problem as a steady-state burning with or without constraints of mechanical equilibrium, and a "second wave" which uses numerical techniques to resolve the burning front and solves the underlying Partial Differential Equations for the chemistry of the burning front under less restrictive conditions. We detail the inaccuracies that the second wave amends over the first wave, and highlight crucial differences between various approaches in the second wave. We also include results from time-dependent simulations of the reaction zone that include a hadronic EOS, neutrinos, and self-consistent thermodynamics without using parameterized shortcuts.

    nucl-thastro-ph.HEUniverse(2019)·4 citations

Affiliations

first authorsco-authorsvia INSPIRE