36 citations · 103 across the 13 of their papers we have counts for
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gr-qc1999★ 24 cited
Vacuum structure for expanding geometry
E Alfinito, R Manka, G Vitiello
We consider gravitational wave modes in the FRW metrics in a de Sitter phase and show that the state space splits into many unitarily inequivalent representations of the canonical…
gr-qc1998★ 9 cited
Canonical Quantization and Expanding Metrics
E. Alfinito, G. Vitiello
The canonical formalism for expanding metrics scenarios is presented. Non-unitary time evolution implied by expanding geometry is described as a trajectory over unitarily inequival…