Thermally activated local collapse of a flattened dipolar condensate
arXiv:1409.1766 · doi:10.1103/PhysRevA.90.053605
Abstract
We consider the metastable dynamics of a flattened dipolar condensate. We develop an analytic model that quantifies the energy barrier to the system undergoing local collapse to form a density spike. We also develop a stochastic Gross-Pitaevskii equation (SGPE) theory for a flatted dipolar condensate, which we use to perform finite temperature simulations verifying the local collapse scenario. We predict that local collapses play a significant role in the regime where rotons are predicted to exist, and will be an important consideration for experiments looking to detect these excitations.
arXiv comment7 pages, 6 figures
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