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arXiv · 2303.12174

Comment on "Absence of Off-Diagonal Long- Range Order in hcp $^4$He Dislocation Cores"

M. Boninsegni·A. Kuklov·L. Pollet·N. Prokof'ev·B. Svistunov
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Abstract

We contend that the arguments provided in Phys. Rev. Lett. 130, 016001 (2023), purporting to show the absence of off-diagonal long-range order in hcp $^4$He dislocation cores are misleading and incorrect. In particular, the one-body density matrix averaged over the whole crystalline sample provides no useful information on the possible superfluid behavior inside the quasi-one-dimensional core of a dislocation in the crystal.

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M. Boninsegni, A. Kuklov, L. Pollet, N. Prokof'ev, B. Svistunov. 2023-03-21. Comment on "Absence of Off-Diagonal Long- Range Order in hcp $^4$He Dislocation Cores". https://doi.org/10.1103/physrevlett.131.189601

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