Superfluid liquid crystals: pasta phases in neutron star crusts
arXiv:1803.06254 · doi:10.1134/S1063776118110067
Abstract
The pasta phases predicted to occur near the inner boundary of the crust of a neutron star resemble liquid crystals, a smectic A in the case of sheet-like nuclei (lasagna) and the columnar phase in the case of rod-like nuclei (spaghetti). An important difference compared with usual liquid crystals is that the nucleons are superfluid. We develop the hydrodynamic equations for this system and use them to study collective oscillations. Nucleon superfluidity leads to important qualitative differences in the spectra of these oscillations and also increases their frequencies compared with ordinary liquid crystals. We discuss a number of directions for future work.
arXiv comment7 pages
References in corpus (10)
- Liquid crystals in the mantles of neutron stars
- Phase diagram of nuclear "pasta" and its uncertainties in supernova cores
- Superfluid Density of Neutrons in the Inner Crust of Neutron Stars: New Life for Pulsar Glitch Models
- Parking-garage structures in astrophysics and biophysics
- Appearance of the Single Gyroid Network Phase in Nuclear Pasta Matter
- Superfluid dynamics in neutron star crusts
- Goldstone modes in the neutron star core
- Collective excitations in the neutron star inner crust
- Long-wavelength phonons in the crystalline and pasta phases of neutron-star crusts
- Two-component superfluid hydrodynamics of neutron star cores
Cited by in corpus (6)
- Elastic properties of phases with nonspherical nuclei in dense matter
- Glassy quantum nuclear pasta in neutron star crusts
- Superfluid dynamics in neutron star crusts: the Iordanskii force and chemical gauge covariance
- Shear and interface modes in neutron stars with pasta structures
- Proton superconductivity in pasta phases in neutron star crusts
- Location and symmetry of superconductivity in neutron stars