Addressing the issue of non-unitarity in anisotropic quantum cosmology

Abstract

In the present work we show that the widely believed pathology of the non-unitarity of anisotropic quantum cosmological models cannot be a generic problem. We exhibit a non trivial example, a Bianchi-I model with an ultrarelativistic fluid, that has a well behaved time independent norm. We also show that a suitable operator ordering should produce time independent norms for the wave packets in the case of other more realistic fluids as well.

6 two column pages, no figure, accepted for publication in Physical Review D

Cited by in corpus (10)

• Restoring unitarity in anisotropic quantum cosmological models
• The Raychaudhuri Equation in inhomogeneous FLRW space-time : A $f(R)$-gravity model
• The classical and quantum implications of the Raychaudhuri Equation in f(T)-gravity
• The Raychaudhuri equation for a quantized timelike geodesic congruence
• Quantized Brans Dicke Theory: Phase Transition and Strong Coupling (Large $\omega$) Limit & General Relativity
• Dynamics of a perfect fluid through velocity potentials with aplication in quantum cosmology
• Unitarity in Reissner-Nordström background: striding away from information loss
• Renormalization Group-Improved Gravitational Action: A Lagrangian Framework
• Anisotropic n-dimensional quantum cosmological model with fluid
• Aspects of Quantum Cosmology