Born–Oppenheimer meets Wigner–Weyl in quantum gravity
نویسندگان
چکیده
Starting from a Born-Oppenheimer decomposition of the Wheeler-DeWitt equation for quantum cosmology matter-gravity system, we have performed Wigner-Weyl transformation and obtained equations involving Wigner function scale factor its conjugate momentum. This has allowed us to study in more detail than previously approach classical limit gravitation way time emerges such limit. To lowest order reproduce Friedmann evolution matter. We also obtain expressions higher corrections semi-classical
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2021
ISSN: ['1361-6382', '0264-9381']
DOI: https://doi.org/10.1088/1361-6382/ac1b0a