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Neutron matter at densities on the order of the nuclear saturation density is believed to have neutrons paired in the 3P2 channel. We study the low-lying modes of this phase and find two massless modes (angulons), resulting from the spontaneous breaking of rotational symmetry as well as three other gapped modes. We compute their masses at arbitrary temperatures. [ABSTRACT FROM AUTHOR]

The condensation of neutrons into a ³P2 superfluid phase occurs at densities relevant for the interior of neutron stars. The triplet pairing breaks rotational symmetry spontaneously and leads to the existence of gapless modes (angulons) that are relevant for many transport coefficients and to the star's cooling properties. We derive the leading terms of the low-energy effective field theory, including the leading coupling to electroweak currents, valid for a variety of possible ³P2 phases. [ABSTRACT FROM AUTHOR]