Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-04-04
Class.Quant.Grav.13:2375-2384,1996
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Latex, 12 pages. Revised version as accepted for publication by Class. and Quant. Grav. Some points explained and misprints co
Scientific paper
10.1088/0264-9381/13/9/005
The Born-Oppenheimer approach to the matter-gravity system is illustrated and the unitary evolution for matter, in the absence of phenomena such as tunnelling or other instabilities, verified. The Born-Oppenheimer approach to the matter-gravity system is illustrated in a simple minisuperspace model and the corrections to quantum field theory on a semiclassical background exhibited. Within such a context the unitary evolution for matter, in the absence of phenomena such as tunnelling or other instabilities, is verified and compared with the results of other approaches. Lastly the simplifications associated with the use of adiabatic invariants to obtain the solution of the explicitly time dependent evolution equation for matter are evidenced.
Bertoni C.
Finelli Fabio
Venturi Giovanni
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