Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 43, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/43/10/105301
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Funding
- NSF [0645340]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0645340] Funding Source: National Science Foundation
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In this paper, we consider the effect of self-localization of a quantum impurity in a Bose-Einstein condensate. The space correlation function of the impurity is evaluated with the help of the imaginary-time path integral approach. Employing Feynman's variational method, we calculate the impurity correlation function as well as the energy of the system associated with the impurity. The effect of self-localization predicted before within the Gross-Pitaevskii approach is recovered by our treatment. The strong coupling regime with negative ground state energy is reached by the variational method, and the corresponding correlation function is calculated.
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