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Study of properties of Bose-Einstein condensates: dipolar atoms

Grant number: 10/02832-5
Support Opportunities:Research Grants - Visiting Researcher Grant - International
Start date: November 11, 2010
End date: November 08, 2011
Field of knowledge:Physical Sciences and Mathematics - Physics - Classical Areas of Phenomenology and Applications
Principal Investigator:Sadhan Kumar Adhikari
Grantee:Sadhan Kumar Adhikari
Visiting researcher: Muruganandam Paulsamy
Visiting researcher institution: Bharathidasan University (BDU), India
Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
Associated research grant:05/03001-1 - Study of Bose-Einstein condensation using mean-field theory, AP.TEM

Abstract

We study the ground state properties of dipolar Bose-Einstein condensates by analyzing the mean-field nonlinear Gross-Pitaevskii equation using variational solution as well as numerical simulation. In particular, we explore the stability properties of dipolar condensates with respect to contact and dipolar interactions for different trap geometries. We bring out new interesting structures and the dynamics exhibited by dipolar condensates from numerical simulation. Further, we consider the study of the Anderson localization of dipolar condensates in bichromatic optical lattice (BOL) and random potentials. By numerical simulation and variational analysis of the Gross-Pitaevskii equation we study the localization of a dipolar Bose-Einstein condensate (DBEC) of $^{52}$Cr atoms in a three-dimensional BOL. We compute the phase diagram relating the atomic scattering lengths and the intensity of optical lattice potentials in different directions. (AU)

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