Phenomenological theory of mode collapse-revival in a confined Bose gas

  title={Phenomenological theory of mode collapse-revival in a confined Bose gas},
  author={Lev Petrovich Pitaevskiĭ},
  journal={Physics Letters A},
Wave Packet Dynamics of Superfluid Fermi Gases in an Anharmonic Trap
We investigate the collective excitations of a one-dimensional ultracold Fermi gas in the crossover from a Bardeen–Cooper–Schrieffer superfluid to a Bose-Einstein condensate. The trap we consider is
SPECIAL ISSUE: Bose-Einstein condensation in magnetic traps. Introduction to the theory
The recent realization of Bose–Einstein condensation in atomic gases opens new possibilities for the observation of macroscopic quantum phenomena. There are two important features of these systems —
The recent realization of Bose-Einstein condensation in atomic gases opens new possibilities for observation of macroscopic quantum phenomena. There are two important features of the system - weak
Collective Excitations in Bose-Einstein Condensates
The experimental discovery of dilute ultracold quantum gases in 1995 has instigated a broad interest in ultracold atoms and molecules, and paved the way for extensive studies of a wide range of both
On the Stability of a Quantum Dynamics of a Bose-Einstein Condensate Trapped in a One-Dimensional Toroidal Geometry
We rigorously analyze the stability of the “quasi-classical” dynamics of a Bose-Einstein condensate with repulsive and attractive interactions, trapped in an effective 1D toroidal geometry. The
Expansion dynamics of a spherical Bose–Einstein condensate
We experimentally and theoretically observe the expansion behaviors of a spherical Bose-Einstein condensate. A rubidium condensate is produced in an isotropic optical dipole trap with an asphericity
Geometric resonances in Bose?Einstein condensates with two- and three-body interactions
We investigate geometric resonances in Bose?Einstein condensates by solving the underlying time-dependent Gross?Pitaevskii equation for systems with two- and three-body interactions in an axially
The physics of trapped dilute-gas Bose–Einstein condensates
Spinor Bose gases: Symmetries, magnetism, and quantum dynamics
Spinor Bose gases form a family of quantum fluids manifesting both magnetic order and superfluidity. This article reviews experimental and theoretical progress in understanding the static and dynamic


Collective Excitations of a Bose-Einstein Condensate in a Magnetic Trap.
The observation of shape oscillations of a trapped Bose condensate, modes analogous to phonons in homogeneous systems are reported on.
Collapses and Revivals of Bose-Einstein Condensates Formed in Small Atomic Samples.
The macroscopic wave function for atomic samples composed of a few thousand particles is shown to exhibit collapses and revivals on a few seconds time scale, while Bose-Einstein condensation remains
Temperature-Dependent Damping and Frequency Shifts in Collective Excitations of a Dilute Bose-Einstein Condensate
We extend to finite temperature the study of collective excitations of a Bose-Einstein condensate in a dilute gas of {sup 87}Rb. Measurements of two modes with different angular momenta show
Bosons in anisotropic traps: Ground state and vortices.
  • Dalfovo, Stringari
  • Physics
    Physical review. A, Atomic, molecular, and optical physics
  • 1996
It is shown that the presence of vortices significantly increases the stability of the condensate in the case of attractive interactions, and the critical angular velocity for production of vorts is calculated.
Coherence versus incoherence: Collapse and revival in a simple quantum model
We describe the temporal behavior of the dynamic elements of an exactly soluble quantum model. The model consists of a single two-level atom or spin interacting with a single mode of the quantized
Bose-Einstein Condensates in Time Dependent Traps.
  • Castin, Dum
  • Physics
    Physical review letters
  • 1996
Analytical results for the macroscopic wave function of a Bose-Einstein condensate in a time dependent harmonic potential are presented, characterized by three scaling factors which allow a classical interpretation of the dynamics.
Generation of nonclassical motional states of a trapped atom.
The creation of thermal, Fock, coherent, and squeezed states of motion of a harmonically bound Be ion, which is trapped in the regime where the coupling between its motional and internal states can be described by a Jaynes-Cummings-type interaction.
Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor
A Bose-Einstein condensate was produced in a vapor of rubidium-87 atoms that was confined by magnetic fields and evaporatively cooled and exhibited a nonthermal, anisotropic velocity distribution expected of the minimum-energy quantum state of the magnetic trap in contrast to the isotropic, thermal velocity distribution observed in the broad uncondensed fraction.