The structure of the perturbation series of the spin-1 Bose gas at low temperatures
arXiv:cond-mat/0106312 · doi:10.1103/PhysRevA.65.043602
Abstract
The properties of Green's functions and various correlation functions of density and spin operators are considered in a homogeneous spin-1 Bose gas in different phases. The dielectric formalism is worked out and the partial coincidence of the one-particle and collective spectra is pointed out below the temperature of Bose-Einstein condensation. As an application the formalism is used to give two approximations for the propagators and the correlation functions and the spectra of excitations including shifts and widths due to the thermal cloud.
34 pages, 17 figures
References in corpus (5)
- Spin correlation and Discrete symmetry in Spinor Bose-Einstein Condensates
- Experimental observation of the Bogoliubov transformation for a Bose-Einstein condensed gas
- 't Hooft-Polyakov Monopoles in an Antiferromagnetic Bose-Einstein Condensate
- Modulational instability of spinor condensates
- Collective excitations in a F=2 Bose-Einstein condensate
Cited by in corpus (12)
- Spinor Bose-Einstein condensates
- Broken axisymmetry phase of a spin-1 ferromagnetic Bose-Einstein condensate
- Bogoliubov Theory and Lee-Huang-Yang Corrections in Spin-1 and Spin-2 Bose-Einstein Condensates in the Presence of the Quadratic Zeeman Effect
- Spin waves in a Bose Ferromagnet
- Pairing, Ferromagnetism, and Condensation of a normal spin-1 Bose gas
- Static properties and spin dynamics of the ferromagnetic spin-1 Bose gas in magnetic field
- Three fluid hydrodynamics of spin-1 Bose-Einstein condensates
- Phases of a polar spin-1 Bose gas in a magnetic field
- Energies and damping rates of elementary excitations in spin-1 Bose-Einstein condensed gases
- Renormalization group approach to the spin-1 Bose gas
- Critical velocity of antiferromagnetic spin-1 Bose-Einstein condensates at finite temperature
- Conserving Gapless Mean-Field Theory of a Multi-Component Bose-Einstein Condensate