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Superfluid Liquid Crystals: Pasta Phases in Neutron Star Crusts
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Copenhagen, Denmark.
Number of Authors: 22018 (English)In: Journal of Experimental and Theoretical Physics, ISSN 1063-7761, E-ISSN 1090-6509, Vol. 127, no 5, p. 851-859Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2018. Vol. 127, no 5, p. 851-859
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-166865DOI: 10.1134/S1063776118110067ISI: 000456583300006OAI: oai:DiVA.org:su-166865DiVA, id: diva2:1294164
Available from: 2019-03-06 Created: 2019-03-06 Last updated: 2019-03-06Bibliographically approved

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Pethick, Christopher J.
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