### A Note on Friedman Universe with a Higher Order Gravity

#### Abstract

New images of black-holes in recent times created a strong validity

of Friedman universe. Since Friedman universe possess singularity, synonymously

black holes, its quantum aspect becomes more important for

study. We have seen Friedman universe with reference to higher order

gravity theory, a natural generalization of Einstein theory of gravity. Particle

creation in vacuum space-time in presence of strong gravitation field

has explained and thus emphasised upon gravitons creation as well as

non-conformal invariance of higher order theory in this context.

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