Controlling collapse in Bose-Einstein condensates by temporal modulation of the scattering length

A study was conducted on the dynamics of 2D and 3D Bose-Einstein condensates in the case when the scattering length in the Gross-Pitaevskii (GP) equation which contains constant (dc) and time-variable (ac) parts. Using the variational approximation (VA), simulating the GP equation directly, and applying the averaging procedure to the GP equation without the use of the VA, it was demonstrated that the ac component of the nonlinearity makes it possible to maintain the condensate in a stable self-confined state without external traps.

Variação espaço-temporal na fenologia e frugivoria do palmito juçara Euterpe edulis Martius (Arecaceae) em três tipos de floresta atlântica

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Distribuição vertical e temporal de ovos de Alabama argillacea e de Heliothis virescens (Lepidoptera: Noctuidae) e parasitismo natural por Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)