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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ground state and collective excitations of a dipolar Bose-Einstein condensate in a bubble trap

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Diniz, Pedro C. . [1] ; Oliveira, Eduardo A. B. [1] ; Lima, Aristeu R. P. [2] ; Henn, Emanuel A. L. [1]
Total Authors: 4
[1] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Integracao Int Lusofonia Afro Brasileira, Campus Auroras, Acarape, Ceara - Brazil
Total Affiliations: 2
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 10, n. 1 MAR 16 2020.
Web of Science Citations: 1

We consider the ground state and the collective excitations of dipolar Bose-Einstein condensates in a bubble trap, i.e., a shell-shaped spherically symmetric confining potential. By means of an appropriate Gaussian ansatz, we determine the ground-state properties in the case where the particles interact by means of both the isotropic and short-range contact and the anisotropic and long-range dipole-dipole potential in the thin-shell limit. Moreover, with the ground state at hand, we employ the sum-rule approach to study the monopole, the two-, the three-dimensional quadrupole as well as the dipole modes. We find situations in which neither the virial nor Kohn's theorem can be applied. On top of that, we demonstrate the existence of anisotropic particle density profiles, which are absent in the case with repulsive contact interaction only. These significant deviations from what one would typically expect are then traced back to both the anisotropic nature of the dipolar interaction and the novel topology introduced by the bubble trap. (AU)

FAPESP's process: 13/07276-1 - CEPOF - Optics and Photonic Research Center
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 18/16369-7 - Investigation of a dipolar Bose-Einstein condensate in bubble traps
Grantee:Eduardo Amâncio Barbosa Oliveira
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 15/20475-9 - Establishment of an experimental apparatus to study dipolar quantum gases
Grantee:Emanuel Alves de Lima Henn
Support Opportunities: Research Grants - Young Investigators Grants