Projects per year
Abstract
Elucidating the appropriate microscopic degrees of freedom within neutron stars remains an open question which impacts nuclear physics, particle physics and astrophysics. The recent discovery of the first non-trivial dibaryon, the d∗(2380), provides a new candidate for an exotic degree of freedom
in the nuclear equation of state at high matter densities. In this paper a first calculation of the role of the d∗(2380) in neutron stars is performed, based on a relativistic mean field description of the nucleonic degrees of freedom supplemented by a free boson gas of d∗(2380). The calculations
indicate that the d∗(2380) would appear at densities around three times normal nuclear matter saturation density, influencing the upper mass limit for a stable neutron star and the neutron and
proton fractions. New possibilities for neutron star cooling mechanisms arising from the d∗(2380)are also predicted.
in the nuclear equation of state at high matter densities. In this paper a first calculation of the role of the d∗(2380) in neutron stars is performed, based on a relativistic mean field description of the nucleonic degrees of freedom supplemented by a free boson gas of d∗(2380). The calculations
indicate that the d∗(2380) would appear at densities around three times normal nuclear matter saturation density, influencing the upper mass limit for a stable neutron star and the neutron and
proton fractions. New possibilities for neutron star cooling mechanisms arising from the d∗(2380)are also predicted.
| Original language | English |
|---|---|
| Pages (from-to) | 112-116 |
| Number of pages | 5 |
| Journal | Physics Letters B |
| Volume | 781 |
| Early online date | 23 Mar 2018 |
| DOIs | |
| Publication status | Published - 10 Jun 2018 |
Bibliographical note
© 2018, The Author(s).Keywords
- EoS
- Hexaquarks
- Neutron stars
Profiles
Projects
- 2 Finished
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Nuclear Physics Consolidated Grant
Jenkins, D. (Principal investigator), Andreyev, A. (Co-investigator), Bentley, M. (Co-investigator), Diget, C. A. (Co-investigator), Dobaczewski, J. J. (Co-investigator), Fulton, B. R. (Co-investigator), Laird, A. M. (Co-investigator), Paschalis, S. (Co-investigator), Pastore, A. (Co-investigator), Petri, M. (Co-investigator) & Wadsworth, R. (Co-investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/17 → 30/09/22
Project: Research project (funded) › Research
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Nuclear Physics Theory
Dobaczewski, J. J. (Principal investigator) & Pastore, A. (Principal investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/06/15 → 31/03/20
Project: Research project (funded) › Research