Proton-proton S01 pairing in neutron stars
نویسندگان
چکیده
منابع مشابه
Neutrino emission due to proton pairing in neutron stars
We calculate the neutrino energy emission rate due to singlet-state pairing of protons in the neutron star cores taking into account the relativistic correction to the non-relativistic rate. The non-relativistic rate is numerically small, and the relativistic correction appears to be about 10 – 50 times larger. It plays thus the leading role, reducing great difference between the neutrino emiss...
متن کاملLetter to the Editor Neutrino emission due to proton pairing in neutron stars
We calculate the neutrino energy emission rate due to singlet-state pairing of protons in the neutron star cores taking into account the relativistic correction to the non-relativistic rate. The non-relativistic rate is numerically small, and the relativistic correction appears to be about 10–50 times larger. It plays thus the leading role, reducing great difference between the neutrino emissio...
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Isoscalar (T = 0) plus isovector (T = 1) pairing hamiltonian in LS-coupling, which is important for heavy N=Z nuclei, is solvable in terms of a O(8) algebra for some special values of the mixing parameter that measures the competition between T = 0 and T = 1 pairing. The O(8) algebra is generated, amongst others, by the S = 1, T = 0 and S = 0, T = 1 pair creation and annihilation operators . Sh...
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Pair vibrations are studied for a Hamiltonian with neutron-neutron, proton-proton and neutron-proton pairing. The spectrum is found to be rich in strongly correlated, low-lying excited states. Changing the ratio of diagonal to off-diagonal pairing matrix elements is found to have a large impact on the excited-state spectrum. The variational configuration interaction (VCI) method, used to calcul...
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The exact solution of the proton-neutron isoscalar-isovector (T=0,1) pairing Hamiltonian with nondegenerate single-particle orbits and equal pairing strengths is presented for the first time. The Hamiltonian is a particular case of a family of integrable SO(8) Richardson-Gaudin models. The exact solution of the T=0,1 pairing Hamiltonian is reduced to a problem of 4 sets of coupled nonlinear equ...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2019
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2019.02.008