SNUTP-96115 gr-qc/9611040 Problem of Unitarity and Quantum Corrections in Semiclassical Quantum Gravity
نویسنده
چکیده
Using both the Born-Oppenheimer idea and the de Broglie-Bohm interpretation of wavefunction we represent in a different way the semiclassical quantum gravity from the Wheeler-DeWitt equation in an oscillating regime which can preserve completely the unitary quantum evolution of a matter field at the expense of a nonlinear gravitational field equation, but has the same asymptotic limit as the others. We apply the de Broglie-Bohm interpretation to the nonlinear gravitational field equation to develop a perturbation method to find the quantum corrections of a matter field to the gravity. The semiclassical Einstein equation with the quantum corrections is found for a minimal quantum FRW cosmological model. Typeset using REVTEX 1
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Problem of Unitarity and Quantum Corrections in Semiclassical Quantum Gravity
Using the Born-Oppenheimer idea we show that the Wheeler-DeWitt equation in an oscillating regime can also allow a different type of semiclassical quantum gravity that preserves completely the unitary quantum evolution of a matter field, which reduces the same asymptotic limit as the others. We develop a perturbation method to find the quantum corrections of a matter field to the gravity. The s...
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