INFLATION PRESSURES

Authors
CAHILL K PODOLSKY J
Citation
K. Cahill et J. Podolsky, INFLATION PRESSURES, Journal of physics. G, Nuclear and particle physics, 20(4), 1994, pp. 571-577
Citations number
12
Categorie Soggetti
Physics, Particles & Fields","Physics, Nuclear
Journal title
Journal of physics. G, Nuclear and particle physics → ACNP
ISSN journal
09543899
Volume
20
Issue
4
Year of publication
1994
Pages
571 - 577
Database
ISI
SICI code
0954-3899(1994)20:4<571:IP>2.0.ZU;2-B
Abstract
If the sum of the energy density rho and thrice the pressure p is nega tive, then a Robertson-Walker universe can inflate or even oscillate. But we show at the one-loop level that in a generic grandly unified th eory rho + 3p cannot be negative at the absolute minimum of the finite -temperature effective potential. We discuss the implications of this result for inflation in two grandly unified theories and speculate on the effects of gravitational friction and anti-friction.