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np pairing correlations in low-density region of nuclear matter

Title
np pairing correlations in low-density region of nuclear matter
Authors
Isayev A.A.Bastrukov S.I.Yang J.
Ewha Authors
양종만
SCOPUS Author ID
양종만scopus
Issue Date
2004
Journal Title
Physics of Atomic Nuclei
ISSN
1063-7788JCR Link
Citation
Physics of Atomic Nuclei vol. 67, no. 10, pp. 1840 - 1845
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Conference Paper
Abstract
In the framework of Green's function formalism at finite temperatures, superfluidity of nuclear matter with np pairing correlations is studied. It is shown that, at low densities, equations for the energy gap in the spectrum of quasiparticles and chemical potentials of protons and neutrons allow solutions with negative chemical potential, which corresponds to appearance of Bose-Einstein condensation of deuterons in the low-density region of nuclear matter. In this region, np pairing correlations survive even for large isospin asymmetry. Interaction between nucleons is described by the effective zero range force, developed to reproduce the energy gap in the isospin singlet pairing channel, calculated with the use of the Paris NN potential. The obtained results may be of importance for description of thermal properties of outer low-density regions of neutron stars. © 2004 MAIK "Nauka/Interperiodica".
DOI
10.1134/1.1811188
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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