Comment on "The low lying modes of triplet-condensed neutron matter and their effective theory"

Abstract

Contrary to what is claimed in the article by P. F. Bedaque and A. N. Nicholson [Phys. Rev. C 87, 055807 (2013)], their result do not contradict but rather complement the conclusion of the paper by L. B. Leinson [Phys. Rev. C 85, 0655021 (2012)] with respect to the low lying nonunitary excitations in the anisotropic neutron superfluid. In fact, the corresponding Goldstone modes (angulons), existing at zero temperature, can be found from Eq. (59) of the work by Leinson. Being massless at absolute zero these modes acquire a mass gap at finite temperature.