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arXiv · 2310.19875

Universal Correlations as Fingerprints of Transverse Quantum Fluids

Anatoly Kuklov·Lode Pollet·Nikolay Prokof'ev·Leo Radzihovsky·Boris Svistunov
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Abstract

We study universal off-diagonal correlations in transverse quantum fluids (TQF) -- a new class of quasi-one-dimensional superfluids featuring long-range-ordered ground states. These exhibit unique self-similar space-time relations scaling with $x^2/D\tau$ that serve as fingerprints of the specific states. The results obtained with the effective field theory are found to be in perfect agreement with {\it ab initio} simulations of hard-core bosons on a lattice -- a simple microscopic realization of TQF. This allows an accurate determination -- at nonzero temperature and finite system size -- of such key ground-state properties as the condensate and superfluid densities, and characteristic parameter $D$.

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Anatoly Kuklov, Lode Pollet, Nikolay Prokof'ev, Leo Radzihovsky, Boris Svistunov. 2023-10-30. Universal Correlations as Fingerprints of Transverse Quantum Fluids. https://doi.org/10.1103/physreva.109.l011302

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