Search results for " 26.60.+c"

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Effects of spin-orbit interaction on nuclear response and neutrino mean free path

2006

PTH; The effects of the spin-orbit component of the particle-hole interaction on nuclear response functions and neutrino mean free path are examined. A complete treatment of the full Skyrme interaction in the case of symmetric nuclear matter and pure neutron matter is given. Numerical results for neutron matter are discussed. It is shown that the effects of the spin-orbit interaction remain small, even at momentum transfer larger than the Fermi momentum. The neutrino mean free paths are marginally affected.

Nuclear and High Energy PhysicsParticle physicsresponse functionsNuclear Theory[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]Mean free pathAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryFOS: Physical sciencesAstrophysics01 natural sciences21.30.Fe 21.60.Jz 21.65.+f 26.60.+cNuclear Theory (nucl-th)Nuclear physicsMomentum[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]0103 physical sciencesNeutronspin-orbit interaction010306 general physicsPhysics[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]010308 nuclear & particles physicsAstrophysics (astro-ph)Momentum transferFísicaSpin–orbit interactionNuclear matterNeutron starnuclear matterrandom phase approximationeffective Skyrme interactionsNeutrino
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Nuclear response functions in homogeneous matter with finite range effective interactions

2005

The question of nuclear response functions in a homogeneous medium is examined. A general method for calculating response functions in the random phase approximation (RPA) with exchange is presented. The method is applicable for finite-range nuclear interactions. Examples are shown in the case of symmetric nuclear matter described by a Gogny interaction. It is found that the convergence of the results with respect to the multipole truncation is quite fast. Various approximation schemes such as the Landau approximation, or the Landau approximation for the exchange terms only, are discussed in comparison with the exact results.

Nuclear and High Energy Physicsresponse functions[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]Nuclear TheoryTruncationNuclear TheoryFOS: Physical sciencesFinite range21.30.Fe 21.60.Jz 21.65.+f 26.60.+c01 natural sciencesNuclear Theory (nucl-th)effective nuclear interactions0103 physical sciencesConvergence (routing)Statistical physics010306 general physicsPhysics010308 nuclear & particles physicsBorn–Huang approximationFísicaNuclear matter3. Good healthHomogeneousnuclear matterrandom phase approximationQuantum electrodynamicsRandom phase approximationMultipole expansion
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