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arXiv · 2404.03465

Superclimbing modes in transverse quantum fluids: signature statistical and dynamical features

Chao Zhang·Massimo Boninsegni·Anatoly Kuklov·Nikolay Prokof'ev·Boris Svistunov
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Abstract

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 $^4$He 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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Chao Zhang, Massimo Boninsegni, Anatoly Kuklov, Nikolay Prokof'ev, Boris Svistunov. 2024-04-04. Superclimbing modes in transverse quantum fluids: signature statistical and dynamical features. https://doi.org/10.1103/physrevb.109.214519

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