Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Cruz, F. F."'
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys., v.42, 235303 (2009)
A complete irreversible adiabatic transport of Bose-Einstein condensate (BEC) in a double-well trap is investigated within the mean field approximation. The transfer is driven by time-dependent (Gaussian) coupling between the wells and their relative
Externí odkaz:
http://arxiv.org/abs/0908.4200
Publikováno v:
Laser Phys., v.19, n.4, pp. 616-624 (2009)
The irreversible transport of multi-component Bose-Einstein condensate (BEC) is investigated within the Stimulated Adiabatic Raman Passage (STIRAP) scheme. A general formalism for a single BEC in M-well trap is derived and analogy between multi-photo
Externí odkaz:
http://arxiv.org/abs/0811.3684
By using a close similarity between multi-photon and tunneling population transfer schemes, we propose robust adiabatic methods for the transport of Bose-Einstein condensate (BEC) in double- and triple-well traps. The calculations within the mean-fie
Externí odkaz:
http://arxiv.org/abs/0809.5012
Publikováno v:
Phys.Rev. D71 (2005) 083516
We consider our universe as a 3d domain wall embedded in a 5d dimensional Minkowski space-time. We address the problem of inflation and late time acceleration driven by bulk particles colliding with the 3d domain wall. The expansion of our universe i
Externí odkaz:
http://arxiv.org/abs/hep-th/0502057
Autor:
Nesterenko, V. O., Kleinig, W., Reinhard, P. -G., Iudice, N. Lo, Cruz, F. F. de Souza, Marinelli, J. R.
Publikováno v:
Eur. Phys. J. D27, n.1, 43-53 (2003)
Low-energy orbital magnetic dipole excitations, known as scissors mode (SM), are studied in alkali metal clusters. Subsequent dynamic and static effects are explored. The treatment is based on a self-consistent microscopic approach using the jellium
Externí odkaz:
http://arxiv.org/abs/physics/0212084
Autor:
Avancini, S. S., Cruz, F. F. de Souza, Marinelli, J. R., Menezes, D. P., de Moraes, M. M. Watanabe
Publikováno v:
Phys.Lett. A307 (2003) 202-208
In this work we develop a formalism to treat quons restricted to the antisymmetric part of their many-body space. A model in which a system of identical quons interact through a pairing force is then solved within this restriction and the differences
Externí odkaz:
http://arxiv.org/abs/nucl-th/0207088
Publikováno v:
Phys.Rev.Lett.85:3141-3144,2000
A remarkable orbital quadrupole magnetic resonance, so-called twist mode, is predicted in alkali metal clusters where it is represented by $I^{\pi}=2^-$ low-energy excitations of valence electrons with strong M2 transitions to the ground state. We tr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010030
We prove that, for the quon algebra, which interpolates between the Bose and Fermi statistics and depends on a free parameter q,it is possible to build an su(2) irreducible representation. One of the consequences of this fact is that the quons couple
Externí odkaz:
http://arxiv.org/abs/math/9904103
Multipole electric and magnetic giant resonances in metal clusters are reviewed and compared with their counterparts in atomic nuclei. The main attention is paid to E1 resonance (dipole plasmon).
Comment: LATEX, 19 pages, 4 figures
Comment: LATEX, 19 pages, 4 figures
Externí odkaz:
http://arxiv.org/abs/physics/9904017
The orbital M1 collective mode predicted for deformed clusters in a schematic model is studied in a self-consistent random-phase-approximation approach which fully exploits the shell structure of the clusters. The microscopic mechanism of the excitat
Externí odkaz:
http://arxiv.org/abs/physics/9903049