scholarly journals Spin polarized neutron matter within the Dirac-Brueckner-Hartree-Fock approach

2007 ◽  
Vol 75 (3) ◽  
Author(s):  
F. Sammarruca ◽  
P. G. Krastev
Keyword(s):  
Neutron Matter ◽  
Hartree Fock ◽  
Spin Polarized ◽  
Polarized Neutron

A microscopic study of spin-polarized neutron matter

2021 ◽  
pp. 1-11
Author(s):  
M.K. Al-Sugheir ◽  
F.F. Mqbel
Keyword(s):  
Magnetic Field ◽  
Nucleon Nucleon ◽  
Neutron Matter ◽  
Effective Magnetic Field ◽  
Many Body ◽  
Nucleon Potential ◽  
Hartree Fock ◽  
Spin Polarized ◽  
Particle Pressure ◽  
Polarized Neutron

In this work, the static fluctuation approximation (SFA) is used to investigate the thermodynamic properties of spin-polarized neutron matter. The energy per particle, pressure, entropy per particle, specific heat capacity, and effective magnetic field are studied as functions of density, temperature, and polarization fraction. The Argonne v18 nucleon–nucleon potential is used here. It is found that the energy per particle, pressure, entropy per particle, and effective magnetic field increase as the density or temperature increases. Also, the energy per particle and pressure are linearly dependent on the quadratic spin polarization δ2. The system becomes more ordered as δ increases. Our calculations are found to be in good agreement with previously published results obtained with different many-body techniques, such as the lowest order constrained variational (LOCV) method, the Brueckner–Hartree–Fock (BHF) approach, and the Dirac–Brueckner–Hartree–Fock (DBHF) technique.

scholarly journals Role of correlations in spin-polarized neutron matter

2016 ◽  
Vol 94 (5) ◽  
Author(s):  
Isaac Vidaña ◽  
Artur Polls ◽  
Victoria Durant
Keyword(s):  
Neutron Matter ◽  
Spin Polarized ◽  
Polarized Neutron

scholarly journals Spin-polarized neutron matter: Critical unpairing and BCS-BEC precursor

2016 ◽  
Vol 93 (1) ◽  
Author(s):  
Martin Stein ◽  
Armen Sedrakian ◽  
Xu-Guang Huang ◽  
John W. Clark
Keyword(s):  
Neutron Matter ◽  
Spin Polarized ◽  
Polarized Neutron
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