Long-wavelength spin- and spin-isospin correlations in nucleon matter

Details Long-wavelength spin- and spin-isospin correlations in nucleon matter Long-wavelength spin- and spin-isospin correlations in nucleon matter

2005-02-10

arxiv.org/abs/nucl-th/0502026v1

Phys.Rev. C72 (2005) 025805

Physics

Nuclear Physics

Nuclear Theory

10 pages, 3 figures

Scientific paper

10.1103/PhysRevC.72.025805

We analyse the long-wavelength response of a normal Fermi liquid using Landau theory. We consider contributions from intermediate states containing one additional quasiparticle-quasihole pair as well as those from states containing two or more additional quasiparticle-quasihole pairs. For the response of an operator corresponding to a conserved quantity, we show that the behavior of matrix elements to states with more than one additional quasiparticle-quasihole pair at low excitation energies $\omega$ varies as $1/\omega$. It is shown how rates of processes involving transitions to two quasiparticle-quasihole states may be calculated in terms of the collision integral in the Landau transport equation for quasiparticles.

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