2024/03/20 by Milan Rakic, Rakic, Milan, Andrew Fu Wah Ho +3 · 1 citation
Chemistry · Materials Science · #Advanced Physical and Chemical Molecular Interactions #FOS: Physical sciences #Material Dynamics and Properties #Quantum Gases (cond-mat.quant-gas)
paper · pdf · doi:10.48550/arxiv.2403.13727
openalex publication_date 2024/03/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study a supersolid in the context of a Gross-Pitaevskii theory with a non-local effective potential. We employ a homogenisation technique which allows us to calculate the elastic moduli, supersolid fraction and other state variables of the system. Our methodology is verified against numerical simulations of elastic deformations. We can also verify that the long-wavelength Goldstone modes that emerge from this technique agree with Bogoliubov theory. We find a thermodynamic anomaly that the supersolid does not obey the thermodynamic relation ∂ P / ∂ V |N = - n ∂ P / ∂ N |V, which we claim is a feature unique to supersolids.