Cosmological Particle Production in Quantum Gravity

Quantum theory of a test field on quantum cosmological spacetime may be viewed as the an emergent classical background. In such case, resulting dressed metric for propagation is function fluctuations original geometry. When backreaction negligible, massive modes can experience anisotropic Bianchi type I The propagating quantum-gravity-induced then unveil interesting phenomenological consequences super-Planckian scales, gravitational particle production. aim this paper to address issue production associated with in spacetime. By imposing suitable adiabatic condition vacuum state and computing energy density created particles, significance dynamics universe Planck era discussed.