K Cahill and J Podolsky 1994 J. Phys. G: Nucl. Part. Phys. 20 571 doi:10.1088/0954-3899/20/4/005
K Cahill and J Podolsky
Show affiliationsIf the sum of the energy density rho and thrice the pressure rho is negative, then a Robertson-Walker universe can inflate or even oscillate. But we show at the one-loop level that in a generic grandly unified theory rho +3 rho 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.
Issue 4 (April 1994)
K Cahill and J Podolsky 1994 J. Phys. G: Nucl. Part. Phys. 20 571
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