Abstract
Collective excitations of infinite nuclear matter are investigated within the framework of the Landau theory of normal Fermi liquids. Numerical results are obtained using the existing sets of the Landau parameters of the quasi-particle interaction in nuclear matter. In the hydrodynamic regime all possible modes of the collective vibrations of the breathing, isospin, spin and spin-isospin type can be excited. In the collisionless regime the breathing mode is strongly damped, and only the longitudinal isospin, spin, and spin-isospin modes may propagate, the velocity of propagation being slightly greater than the quasi-particle velocity at the Fermi surface.
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