Ground-state phase diagram of a dipolar condensate with quantum fluctuations

Year: 2016

Authors: Bisset RN., Wilson RM., Baillie D., Blakie PB

Autors Affiliation: Univ Trento, INO CNR BEC Ctr, Via Sommar 14, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, Via Sommar 14, I-38123 Povo, Italy; US Naval Acad, Dept Phys, Annapolis, MD 21402 USA; Univ Otago, Dept Phys, Ctr Quantum Sci, Dunedin, New Zealand;‎ Univ Otago, Dodd Walls Ctr Photon & Quantum Technol, Dunedin, New Zealand

Abstract: We consider the ground state properties of a trapped dipolar condensate under the influence of quantum fluctuations. We show that this system can undergo a phase transition from a low density condensate state to a high density droplet state, which is stabilized by quantum fluctuations. The energetically favored state depends on the geometry of the confining potential, the number of atoms, and the two-body interactions. We develop a simple variational ansatz and validate it against full numerical solutions. We produce a phase diagram for the system and present results relevant to current experiments with dysprosium and erbium condensates.


Volume: 94 (3)      Pages from: 033619-1  to: 033619-10

DOI: 10.1103/PhysRevA.94.033619

Citations: 142
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