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Vorticity-Crystalline Order Coupling in Supersolids : Excitations and Reentrant Phases

Schubert, M. LU ; Mukherjee, K. LU ; Stürmer, P. LU and Reimann, S. M. LU (2026) In Physical Review Letters 136(18).
Abstract

Rotation is a natural tool in ultracold gases to break time-reversal symmetry, yet its impact on the collective excitations of supersolids remains largely unexplored. We show theoretically that tuning the rotation frequency, rather than the interparticle interactions, can trigger the superfluid-to-supersolid transition in Bose-Einstein condensates. Computing excitation spectra in the presence of vortices and persistent currents, we uncover a vortex-driven desoftening mechanism whereby quantized vorticity elevates the gapless Goldstone mode to a finite-energy roton, restoring superfluidity. This effect results in reentrant supersolid phases as a function of rotation frequency, revealing a fundamental coupling between topological defects... (More)

Rotation is a natural tool in ultracold gases to break time-reversal symmetry, yet its impact on the collective excitations of supersolids remains largely unexplored. We show theoretically that tuning the rotation frequency, rather than the interparticle interactions, can trigger the superfluid-to-supersolid transition in Bose-Einstein condensates. Computing excitation spectra in the presence of vortices and persistent currents, we uncover a vortex-driven desoftening mechanism whereby quantized vorticity elevates the gapless Goldstone mode to a finite-energy roton, restoring superfluidity. This effect results in reentrant supersolid phases as a function of rotation frequency, revealing a fundamental coupling between topological defects and crystalline order.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
136
issue
18
article number
183401
publisher
American Physical Society
external identifiers
  • pmid:42172404
  • scopus:105038405946
ISSN
0031-9007
DOI
10.1103/gqlr-bgj8
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2026 authors. Published by the American Physical Society.
id
b1026c00-fdb1-4bff-8cd9-9ee61dfae7f8
date added to LUP
2026-07-14 15:22:24
date last changed
2026-10-07 20:13:25
@article{b1026c00-fdb1-4bff-8cd9-9ee61dfae7f8,
  abstract     = {{<p>Rotation is a natural tool in ultracold gases to break time-reversal symmetry, yet its impact on the collective excitations of supersolids remains largely unexplored. We show theoretically that tuning the rotation frequency, rather than the interparticle interactions, can trigger the superfluid-to-supersolid transition in Bose-Einstein condensates. Computing excitation spectra in the presence of vortices and persistent currents, we uncover a vortex-driven desoftening mechanism whereby quantized vorticity elevates the gapless Goldstone mode to a finite-energy roton, restoring superfluidity. This effect results in reentrant supersolid phases as a function of rotation frequency, revealing a fundamental coupling between topological defects and crystalline order.</p>}},
  author       = {{Schubert, M. and Mukherjee, K. and Stürmer, P. and Reimann, S. M.}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{18}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Vorticity-Crystalline Order Coupling in Supersolids : Excitations and Reentrant Phases}},
  url          = {{http://dx.doi.org/10.1103/gqlr-bgj8}},
  doi          = {{10.1103/gqlr-bgj8}},
  volume       = {{136}},
  year         = {{2026}},
}