Title:
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Pairing in high-density neutron matter including short- and long-range correlations
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Author:
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Ding, D.; Rios, A.; Dussan, H.; Dickhoff, W. H.; Carbone, A.; Polls Martí, Artur; Witte, S. J.
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Other authors:
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Universitat de Barcelona |
Abstract:
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Pairing gaps in neutron matter need to be computed in a wide range of densities to address open questions in neutron-star phenomenology. Traditionally, the Bardeen-Cooper-Schrieffer approach has been used to compute gaps from bare nucleon-nucleon interactions. Here we incorporate the influence of short-and long-range correlations in the pairing gaps. Short-range correlations are treated, including the appropriate fragmentation of single-particle states, and substantially suppress the gaps. Long-range correlations dress the pairing interaction via density and spin modes and provide a relatively small correction. We use different interactions, some with three-body forces, as a starting point to control for any systematic effects. Results are relevant for neutron-star cooling scenarios, in particular in view of the recent observational data on Cassiopeia A. |
Subject(s):
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-Energia nuclear -Constel·lacions -Neutrons -Nuclear energy -Constellations -Neutrons |
Rights:
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(c) American Physical Society, 2016
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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