Superclimbing modes in transverse quantum fluids: signature statistical and dynamical features
arxiv(2024)
摘要
Superclimbing modes are hallmark degrees of freedom of transverse quantum
fluids describing wide superfluid one-dimensional interfaces and/or edges with
negligible Peierls barrier. We report the first direct numeric evidence of
quantum shape fluctuations – caused by superclimbing modes – in simple
lattice models, as well as at the free edge of an incomplete solid monolayer of
^4He adsorbed on graphite. Our data unambiguously reveals the defining
feature of the superclimbing modes – canonical conjugation of the edge
displacement field to the field of superfluid phase – and its unexpected
implication, i.e., that superfluid stiffness can be inferred from density
snapshots.
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