Green-function method in the theory of ultraslow electromagnetic waves in an ideal gas with Bose-Einstein condensates

Abstract

We propose a microscopic approach describing the interaction of an ideal gas of hydrogenlike atoms with a weak electromagnetic field. This approach is based on the Green-function formalism and an approximate formulation of the method of second quantization for quantum many-particle systems in the presence of bound states of particles. The dependencies of the propagation velocity and damping rate of electromagnetic pulses on the microscopic characteristics of the system are studied for a gas of hydrogenlike atoms. For a Bose-Einstein condensate of alkali-metal atoms we find the conditions when the electromagnetic waves of both the optical and microwave regions are slowed. In the framework of the proposed approach, the influence of an external homogeneous and static magnetic field on the slowing phenomenon is studied.

15 pages, 6 figures

References in corpus (5)

• Dynamical response of a Bose-Einstein condensate to a discontinuous change in internal state
• Quantum field theory of cooperative atom response: Low light intensity
• Storing and processing optical information with ultra-slow light in Bose-Einstein condensates
• Lorentz-Lorenz shift in a Bose-Einstein condensate
• Second quantization method in the presence of bound states of particles

Cited by in corpus (8)

• Bose-Einstein condensation of photons in an ideal atomic gas
• Bose-Einstein condensation of photons in a plasma
• Bose-Einstein condensation of heteronuclear bound states formed in a Fermi gas of two atomic species: microscopic approach
• Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases
• Propagation of relativistic charged particles in ultracold atomic gases with Bose-Einstein condensates
• Role of temperature effects in the phenomenon of ultraslow electromagnetic pulses in Bose-Einstein condensates of alkali-metal atoms
• Aspects of Bose-Einstein condensation in a charged boson system over the dielectric surface
• Magnetic field dependence and the possibility of filtering ultraslow light pulses in atomic gases with Bose-Einstein condensates