2024/06/28 by Liang-Jun He, He, Liang-Jun, Fabian Maucher +3 · 1 citation
Engineering · #Characterization and Applications of Magnetic Nanoparticles #Electrohydrodynamics and Fluid Dynamics #FOS: Physical sciences #Laser-induced spectroscopy and plasma #Quantum Gases (cond-mat.quant-gas)
paper · pdf · doi:10.48550/arxiv.2406.19609
openalex publication_date 2024/06/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The beyond mean-field physics due to quantum fluctuations is often described by the Lee-Huang-Yang (LHY) correction, which can be approximately written as a simple analytical expression in terms of the mean-field employing local density approximation. This model has proven to be very successful in predicting the dynamics in dipolar Bose-Einstein condensates both qualitatively and quantitatively. Yet, a small deviation between experimental results and the theoretical prediction has been observed when comparing experiment and theory of the phase boundary of a free-space quantum droplet. For this reason, we revisit the theoretical description of quantum fluctuations in dipolar quantum gases. We study alternative cutoffs, compare them to experimental results and discuss limitations.