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Superfluid Liquid Crystals: Pasta Phases in Neutron Star Crusts
Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia..
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2018 (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
PLEIADES PUBLISHING INC , 2018. Vol. 127, no 5, p. 851-859
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-243972DOI: 10.1134/S1063776118110067ISI: 000456583300006Scopus ID: 2-s2.0-85060643280OAI: oai:DiVA.org:kth-243972DiVA, id: diva2:1292993
Note

QC 20190301

Available from: 2019-03-01 Created: 2019-03-01 Last updated: 2019-03-01Bibliographically approved

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Pethick, Christopher

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