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Title: Neutron-proton effective mass splitting in terms of symmetry energy and its density slope

Abstract

Using a simple density-dependent finite-range effective interaction having Yukawa form, the density dependence of isoscalar and isovector effective masses is studied. The isovector effective mass is found to be different for different pairs of like and unlike nucleons. Using HVH theorem, the neutron-proton effective mass splitting is represented in terms of symmetry energy and its density slope. It is again observed that the neutron-proton effective mass splitting has got a positive value when isoscalar effective mass is greater than the isovector effective mass and has a negative value for the opposite case. Furthermore, the neutron-proton effective mass splitting is found to have a linear dependence on asymmetry β. The second-order symmetry potential has a vital role in the determination of density slope of symmetry energy but it does not have any contribution on neutron-proton effective mass splitting. The finite-range effective interaction is compared with the SLy2, SKM, f{sub −}, f{sub 0}, and f{sub +} forms of interactions.

Authors:
 [1];  [2]
  1. M. M. M. College, Department of Physics (India)
  2. DIATM, Department of Applied Sciences (India)
Publication Date:
OSTI Identifier:
22472462
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 78; Journal Issue: 1; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASYMMETRY; COMPARATIVE EVALUATIONS; EFFECTIVE MASS; ISOVECTORS; NEUTRONS; PROTONS; SYMMETRY; YUKAWA POTENTIAL

Citation Formats

Chakraborty, S., Sahoo, B., and Sahoo, S., E-mail: sukadevsahoo@yahoo.com. Neutron-proton effective mass splitting in terms of symmetry energy and its density slope. United States: N. p., 2015. Web. doi:10.1134/S1063778815010032.
Chakraborty, S., Sahoo, B., & Sahoo, S., E-mail: sukadevsahoo@yahoo.com. Neutron-proton effective mass splitting in terms of symmetry energy and its density slope. United States. https://doi.org/10.1134/S1063778815010032
Chakraborty, S., Sahoo, B., and Sahoo, S., E-mail: sukadevsahoo@yahoo.com. 2015. "Neutron-proton effective mass splitting in terms of symmetry energy and its density slope". United States. https://doi.org/10.1134/S1063778815010032.
@article{osti_22472462,
title = {Neutron-proton effective mass splitting in terms of symmetry energy and its density slope},
author = {Chakraborty, S. and Sahoo, B. and Sahoo, S., E-mail: sukadevsahoo@yahoo.com},
abstractNote = {Using a simple density-dependent finite-range effective interaction having Yukawa form, the density dependence of isoscalar and isovector effective masses is studied. The isovector effective mass is found to be different for different pairs of like and unlike nucleons. Using HVH theorem, the neutron-proton effective mass splitting is represented in terms of symmetry energy and its density slope. It is again observed that the neutron-proton effective mass splitting has got a positive value when isoscalar effective mass is greater than the isovector effective mass and has a negative value for the opposite case. Furthermore, the neutron-proton effective mass splitting is found to have a linear dependence on asymmetry β. The second-order symmetry potential has a vital role in the determination of density slope of symmetry energy but it does not have any contribution on neutron-proton effective mass splitting. The finite-range effective interaction is compared with the SLy2, SKM, f{sub −}, f{sub 0}, and f{sub +} forms of interactions.},
doi = {10.1134/S1063778815010032},
url = {https://www.osti.gov/biblio/22472462}, journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 1,
volume = 78,
place = {United States},
year = {Thu Jan 15 00:00:00 EST 2015},
month = {Thu Jan 15 00:00:00 EST 2015}
}