2025/07/01 by Koushik Mukherjee, Mukherjee, Koushik, Schubert, Malte +8
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum Electrodynamics and Casimir Effect #Quantum Gases (cond-mat.quant-gas) #Quantum Physics (quant-ph) #Strong Light-Matter Interactions
paper · pdf · doi:10.48550/arxiv.2507.00989
openalex publication_date 2025/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
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 particle through a non-spectroscopic approach. These results pave the way for further studies of coherent Higgs dynamics and mutual interactions between Higgs particles.