Collective excitations in the neutron star inner crust

Details Collective excitations in the neutron star inner crust Collective excitations in the neutron star inner crust

2011-07-21

arxiv.org/abs/1107.4209v2

Phys.Rev.C.84:045801,2011

Physics

Nuclear Physics

Nuclear Theory

10 pages, 4 figures, v2: one reference added and typos corrected

Scientific paper

10.1103/PhysRevC.84.045801

We study the spectrum of collective excitations in the inhomogeneous phases in the neutron star inner crust within a superfluid hydrodynamics approach. Our aim is to describe the whole range of wavelengths, from the long-wavelength limit which can be described by macroscopic approaches and which is crucial for the low-energy part of the spectrum, to wavelengths of the order of the dimensions of the Wigner-Seitz cells, corresponding to the modes usually described in microscopic calculations. As an application, we will discuss the contribution of these collective modes to the specific heat of the "lasagna" phase in comparison with other known contributions.

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