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Quantum Carpets of Higgs Quasiparticles in a Supersolid

Mukherjee, K. LU ; Schubert, M. LU ; Klemt, R. ; Bland, T. LU orcid ; Pfau, T. and Reimann, S. M. LU (2025) In Physical Review Letters 135(22).
Abstract

Supersolids formed from dipolar Bose Einstein condensates (BECs) exhibit spontaneous density modulation while maintaining global phase coherence. This state of matter supports gapped amplitude (Higgs) excitations featuring a quadratic dispersion relation. While Higgs modes are typically strongly damped due to coupling with other amplitude and phase modes, imposing an experimentally realistic toroidal geometry allows us to numerically study the time evolution and dispersion of a localized Higgs quasiparticle excitation, with minimal residual coupling to sound modes. Strikingly, the quadratic dispersion leads to the occurrence of (fractional) revivals, similar to those seen in the optical Talbot effect or the so-called quantum carpets.... (More)

Supersolids formed from dipolar Bose Einstein condensates (BECs) exhibit spontaneous density modulation while maintaining global phase coherence. This state of matter supports gapped amplitude (Higgs) excitations featuring a quadratic dispersion relation. While Higgs modes are typically strongly damped due to coupling with other amplitude and phase modes, imposing an experimentally realistic toroidal geometry allows us to numerically study the time evolution and dispersion of a localized Higgs quasiparticle excitation, with minimal residual coupling to sound modes. Strikingly, the quadratic dispersion leads to the occurrence of (fractional) revivals, similar to those seen in the optical Talbot effect or the so-called quantum carpets. The revival times provide a novel method for determining the effective mass of the Higgs quasiparticle through a nonspectroscopic approach. These results pave the way for further studies of coherent Higgs dynamics and mutual interactions between Higgs quasiparticle.

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type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
135
issue
22
article number
223402
publisher
American Physical Society
external identifiers
  • scopus:105022827698
  • pmid:41385673
ISSN
0031-9007
DOI
10.1103/6d1g-671p
language
English
LU publication?
yes
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Publisher Copyright: © 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by "https://www.kb.se/samverkan-och-utveckling/oppen-tillgang-och-bibsamkonsortiet/bibsamkonsortiet.html"Bibsam.
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454c4ea4-9b53-4799-b78d-e65726246dc7
date added to LUP
2026-01-19 12:07:36
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2026-01-19 12:08:48
@article{454c4ea4-9b53-4799-b78d-e65726246dc7,
  abstract     = {{<p>Supersolids formed from dipolar Bose Einstein condensates (BECs) exhibit spontaneous density modulation while maintaining global phase coherence. This state of matter supports gapped amplitude (Higgs) excitations featuring a quadratic dispersion relation. While Higgs modes are typically strongly damped due to coupling with other amplitude and phase modes, imposing an experimentally realistic toroidal geometry allows us to numerically study the time evolution and dispersion of a localized Higgs quasiparticle excitation, with minimal residual coupling to sound modes. Strikingly, the quadratic dispersion leads to the occurrence of (fractional) revivals, similar to those seen in the optical Talbot effect or the so-called quantum carpets. The revival times provide a novel method for determining the effective mass of the Higgs quasiparticle through a nonspectroscopic approach. These results pave the way for further studies of coherent Higgs dynamics and mutual interactions between Higgs quasiparticle.</p>}},
  author       = {{Mukherjee, K. and Schubert, M. and Klemt, R. and Bland, T. and Pfau, T. and Reimann, S. M.}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  month        = {{11}},
  number       = {{22}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Quantum Carpets of Higgs Quasiparticles in a Supersolid}},
  url          = {{http://dx.doi.org/10.1103/6d1g-671p}},
  doi          = {{10.1103/6d1g-671p}},
  volume       = {{135}},
  year         = {{2025}},
}