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3D BEC Bright Solitons under Transverse Confinement: Analytical Results with the Nonpolynomial Schrodinger Equation
Luca Salasnich
The Bose-Einstein condensate (BEC) of a dilute gas of bosons is well described by the three-dimensional Gross-Pitaevskii equation (3D GPE), that is a nonlinear Schrodinger equation…
Parametric Resonance Phenomena in Bose-Einstein Condensates: Breaking of Macroscopic Quantum Self-Trapping
Luca Salasnich
We analyze the periodic tunneling of a Bose-Einstein condensate in a double-well potential which has an oscillating energy barrier. We show that the dynamics of the Bose condensate…
Parametric Resonance Phenomena in Bose-Einstein Condensates: Enhanced Quantum Tunneling of Coherent Matter Pulses
Luca Salasnich
We investigate the quantum tunneling of a Bose-Einstein condensate confined in a optical trap. We show that periodic pulses of coherent matter are emitted from the trap by using an…
Particles and Anti-Particles in a Relativistic Bose Condensate
Luca Salasnich
We study the Bose-Einstein condensation (BEC) for a relativistic ideal gas of bosons. In the framework of canonical thermal field theory, we analyze the role of particles and anti-…
Bose-condensed Bright Solitons under Transverse Confinement
L. Salasnich, A. Parola, L. Reatto
We investigate the dynamics of Bose-condensed bright solitons made of alkali-metal atoms with negative scattering length and under harmonic confinement in the transverse direction.…
Periodic Quantum Tunneling and Parametric Resonance with Cigar-Shaped Bose-Einstein Condensates
L. Salasnich, A. Parola, L. Reatto
We study the tunneling properties of a cigar-shaped Bose-Einstein condensate by using an effective 1D nonpolynomial nonlinear Schrödinger equation (NPSE). First we investigate a me…
Critical Temperature of an Interacting Bose Gas in a Generic Power-Law Potential
Luca Salasnich
We investigate the critical temperature of an interacting Bose gas confined in a trap described by a generic isotropic power-law potential. We compare the results with respect to t…
Effective wave-equations for the dynamics of cigar-shaped and disc-shaped Bose condensates
L. Salasnich, A. Parola, L. Reatto
Starting from the 3D Gross-Pitaevskii equation and using a variational approach, we derive an effective 1D wave-equation that describes the axial dynamics of a Bose condensate conf…