Particle production in higher derivative theory

Particle production in higher derivative theory

The effect of particle production on the evolution of the spatially flat Friedmann-Lemaitre-Robertson-Walker cosmological model during the early stages of the universe is analysed in the framework of higher derivative theory. The universe has been considered as an open thermodynamic system where par...

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Veröffentlicht in:Pramāṇa 2000-05, Vol.54 (5), p.729-736
Hauptverfasser: Singh, G P, Beesham, A, Deshpande, R V
Format: Artikel
Sprache:eng
Schlagworte:
Astronomical models
Cosmology
Particle production
Thermodynamics
Universe
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Zusammenfassung:The effect of particle production on the evolution of the spatially flat Friedmann-Lemaitre-Robertson-Walker cosmological model during the early stages of the universe is analysed in the framework of higher derivative theory. The universe has been considered as an open thermodynamic system where particle production gives rise to a supplementary negative creation pressure in addition to the thermodynamic pressure. The dynamical behaviour of both exponential as well as power law solutions have been discussed.
ISSN:0304-4289
0973-7111
DOI:10.1007/s12043-000-0118-x