Joining conditions for cosmological perturbations at an equation-of-state transition
- 15 June 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 43 (12) , 3802-3812
- https://doi.org/10.1103/physrevd.43.3802
Abstract
Joining conditions for cosmological spatial irregularities at an equation-of-state transition spatial hypersurface are derived by requiring that the relativistic linear perturbation theory equations of motion remain singularity-free at the transition spatial hypersurface. The transition spatial hypersurface is taken to be a spatially homogeneous local energy-density spatial hypersurface, between two spacetime-dependent "speed-of-sound" fluid-dominated epochs of a spatially flat Friedmann-Lemaître-Robertson-Walker cosmological model. Since the spacetime-dependent "speed-of-sound" fluid model includes, as special cases, both the scalar field model and the ideal fluid model, these joining conditions may be used at the scalar-field-radiation and radiation-baryon transitions in simple inflation-modified hot big-bang models. These joining conditions differ from two earlier sets of joining conditions (which differ from each other).Keywords
This publication has 8 references indexed in Scilit:
- Quantum mechanics of exponential-potential inflationPhysical Review D, 1989
- Expressions for linearized perturbations in ideal-fluid cosmological modelsPhysical Review D, 1988
- Cosmological consequences of a rolling homogeneous scalar fieldPhysical Review D, 1988
- Quantum mechanics of inflationNuclear Physics B, 1985
- Restoration of spontaneously broken continuous symmetries in de Sitter spacetimePhysical Review D, 1985
- Cosmological Perturbation TheoryProgress of Theoretical Physics Supplement, 1984
- Spontaneous creation of almost scale-free density perturbations in an inflationary universePhysical Review D, 1983
- RELATIVISTIC ASTROPHYSICS. ISoviet Physics Uspekhi, 1965