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Liquid He-4 and its superfluidity

Research output: Contribution in Book/Report/ProceedingsPaper

Publication date2003
Host publicationPatterns of symmetry breaking
EditorsHenryk Arodz, Jacek Dziarmaga, Wojciech Hubert Zurek
Place of PublicationDordrecht
Number of pages47
ISBN (Electronic)9789400710290
ISBN (Print)1402017448, 9781402017452
<mark>Original language</mark>English

Publication series

NameNATO Science, Series II: Mathematics, Physics and Chemistry
ISSN (Print)1568-2609


The properties of liquid 4He, and the present understanding of its superuidity, are reviewed. Brief accounts are given of its main physical properties, the 2-fluid model, the Landau excitation model, quantized vortex lines, and critical velocities and their origins. Two experiments in progress on vortex creation and decay are discussed in more detail: an attempt to carry out Zurek's experiment, using the superuid transition to model the GUT symmetry-breaking transition of the early universe; and an exploratory investigation of quantized turbulence in the mechanical vacuum below 50 mK.

Bibliographic note

Proceedings of Conference, the NATO-Advanced-Study Institute on Patterns of Symmetry Breaking Cracow, Poland, September 15-29, 2002.