Superfluid experiments support Kosterlitz–Thouless theory
AUG 01, 1978
DOI: 10.1063/1.2995137
Five years ago Michael Kosterlitz and David Thouless predicted that in the x–y or planar model of two‐dimensional substances, a new type of phase transition would occur. In a two‐dimensional superfluid, for example, at low temperatures the system would be arranged as bound vortex‐antivortex pairs whose dissociation leads to the transition. More recently David Nelson and Kosterlitz suggested that the theory could be tested experimentally by looking for a universal jump in the superfluid density at the Kosterlitz–Thouless phase transition.
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© 1978 American Institute of Physics
