Published January 1987
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Van Kampen waves in extended Fermi systems and the Random phase approximation
- 1. Sao Paulo Univ. (Brazil). Inst. de Fisica
- 2. Coimbra Univ. (Portugal). Lab. de Fisica
Description
An orthogonal and complete set of solutions (in the sense of the Random Phase Approximation) to the linearized Vlasov equation for an infinite, homogeneous many-fermion system is constructed classical analogues of the RPA quasiboson operators are obtained and compared to their quantum mechanical counterparts written in a classical phase-space representation. The initial value problem of determining the subsequent time evolution of a given disturbance of the (stable) equilibrium distribution is discussed. (Author)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
Constroe-se um conjunto completo e ortogonal de solucoes (no sentido da Aproximacao) de Fase Aleatoria AFA) a equacao de Vlasov linearizada para um sistema de muitos termious homogeneo e infinito. Analogos classicos dos operadores de quase-bosons de AFA sao obtidos e comparados aos seus analogos quanticos escritos numa representacao de espaco de fase classico. O problema de valor inicial na determinacao da evolucao temporal subsequente de um dado disturbio da distribuicao de equilibrio (estavel) e discutido. (L.C.)Files
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Additional details
Publishing Information
- Imprint Pagination
- 13 p.
- Report number
- IFUSP-P--621
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 18086603
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- ANALYTICAL SOLUTION; BOLTZMANN-VLASOV EQUATION; EQUATIONS OF MOTION; EXCITATION; FERMI STATISTICS; MANY-BODY PROBLEM; OSCILLATION MODES; PLASMA WAVES; RANDOM PHASE APPROXIMATION; TIME DEPENDENCE; ZERO SOUND
- Descriptors DEC
- DIFFERENTIAL EQUATIONS; ENERGY-LEVEL TRANSITIONS; EQUATIONS; PARTIAL DIFFERENTIAL EQUATIONS