Bose-Einstein condensates (BEC)
Coherent atomic oscillations and resonances between coupled Bose-Einstein condensates with time-dependent trapping potential
... types of damping terms occurring in the studies of two coupled condensates. Using the Melnikov approach, we study the possibility of the appearance of the chaotic oscil- lations in the tunneling phenomena between ...
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Stability of trapped Bose-Einstein condensates
... trapped Bose-Einstein condensates 共BEC’s兲, it is well known that collapse occurs when the two-body interaction is attractive and if the number of atoms N exceeds a critical value N c , as in the case ...
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Controlling collapse in Bose-Einstein condensates by temporal modulation of the scattering length
... Collisions between atoms play a crucially important role in the dynamics of Bose-Einstein condensates ~BECs!. As is commonly known, the collisions are accounted for by the cubic term in the ...
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Dynamics of Bose-Einstein condensates in cigar-shaped traps
... The formation of Bose-Einstein condensates sBECsd in dilute gases [1–3] has created a field of nonlinear physics with specific problems. Among the features of BEC in gases are the spatial ...
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Proca stars: Gravitating Bose-Einstein condensates of massive spin 1 particles
... Introduction. According to the latest cosmological data [1] , ∼ 26% of the Universe’s energy content is dark matter (DM). The funda- mental nature of DM, however, is unknown. A widespread view- point is that DM consists ...
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Array of Bose-Einstein condensates under time-periodic Feshbach-resonance management
... of Bose-Einstein condensates under the action of a periodi- cally time-modulated atomic scattering length @Feshbach-resonance management ~FRM!# is ...
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Dissipationless shock waves in Bose-Einstein condensates with repulsive interaction between atoms
... We consider formation of dissipationless shock waves in Bose-Einstein condensates with repulsive interac- tion between atoms. It is shown that for big enough initial inhomogeneity of density, ...
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Mean-field description of collapsing and exploding Bose-Einstein condensates
... Instituto de Fı´sica Teo´rica, Universidade Estadual Paulista, 01.405-900 Sa ˜o Paulo, Sa ˜o Paulo, Brazil 共Received 4 February 2002; revised manuscript received 21 March 2002; published 19 July 2002兲 We perform ...
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Autosolitons in trapped Bose-Einstein condensates with two- and three-body inelastic processes
... three-dimensional condensates with attractive interaction between atoms and trapping potential are unstable if the number of atoms exceeds the critical value (N c ...
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Mixed-isotope Bose-Einstein condensates in rubidium
... B. Ground states for attractive interspecies interaction Now let us consider the BEC mixture of two isotopes when the interspecies interaction is attractive, which can be experimentally realized by using the Feshbach ...
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Dipolar Bose-Einstein condensates with large scattering length
... For this purpose, in this paper, in addition to the numerical study at unitarity, we also present a complete numerical study of the dipolar BEC in the strong-coupling regime for scatteri[r] ...
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Ondas de choque em condensados de Bose-Einstein e espalhamento inelástico de átomos...
... in Bose-Einstein condensates” and “Inelastic scattering of atoms in a double ...a Bose-Einstein condensate (BEC) past a slender impenetrable macroscopic obstacle in the framework of the ...
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Soliton dynamics in Bose-Einstein condensates : Dinâmica do sóliton em condensados de Bose-Einstein
... the Bose-Einstein Condensation allows the appearance of topological solutions, in this work we want to see how this theory can be applied in the Schrödinger ...in Bose-Einstein Conden- sates ...
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Critical number of atoms for attractive Bose-Einstein condensates with cylindrically symmetrical traps
... We calculated, within the Gross-Pitaevskii formalism, the critical number of atoms for Bose-Einstein con- densates with two-body attractive interactions in cylindrical traps with different frequency ratios. ...
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Symbiotic gap and semigap solitons in Bose-Einstein condensates
... Using the variational approximation and numerical simulations, we study one-dimensional gap solitons in a binary Bose-Einstein condensate trapped in an optical-lattice potential. We consider the case of ...
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Exotic Bose-Einstein condensates: binary mixtures and dipolar gases
... Now with the available dipolar BECs of a different species of atoms, there is the possibility to investigate a binary mixture with two dipolar BECs of two types of dipolar interactions a[r] ...
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Uma interpretação simples para os condensados de Bose-Einstein.
... The Bose-Einstein condensates were theoretically predicted in ...The Bose-Einstein condensates have been used in different contexts, from condensed matter to ...
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Bright vortex solitons in bose condensates
... Abstract. We suggest the possibility of observing and studying bright vortex solitons in attractive Bose-Einstein condensates in three dimensions with a ra- dial trap. Such systems lie on the verge ...
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Controle coerente da excitação de modos topológicos em condensados de Bose-Einstein
... dimensional Bose- Einstein condensates of dilute gases by development and application of techniques on systems that are described by Gross-Pitaevskii ...built condensates in topological modes ...
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Turbulência de Ondas em Condensados de Bose-Einstein
... In this work we used as a starting point the theory developed by Zakharov and Nazarenko for treating wave turbulence in systems with weak non linearity such as atomic Bose-Einstein condensates with ...
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