Quantum geometric formulation of Brans-Dicke theory for Bianchi i spacetime
Issued Date
2025-02-15
Resource Type
ISSN
24700010
eISSN
24700029
Scopus ID
2-s2.0-85217494146
Journal Title
Physical Review D
Volume
111
Issue
4
Rights Holder(s)
SCOPUS
Bibliographic Citation
Physical Review D Vol.111 No.4 (2025)
Suggested Citation
Sharma M., Vicente G.S., Graef L.L., Ramos R.O., Wang A. Quantum geometric formulation of Brans-Dicke theory for Bianchi i spacetime. Physical Review D Vol.111 No.4 (2025). doi:10.1103/PhysRevD.111.043501 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/105323
Title
Quantum geometric formulation of Brans-Dicke theory for Bianchi i spacetime
Author(s)
Corresponding Author(s)
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Abstract
This paper investigates Bianchi I spacetimes within the Jordan frame of Brans-Dicke theory, incorporating the framework of effective loop quantum gravity. After developing general formulas, we analyze the robustness of classical singularity resolution due to quantum geometric effects using two common quantization schemes. We then compare the resulting physical properties. We find that both schemes replace classical singularities with regular quantum bounces. Notably, in contrast to similar studies based on general relativity, we find that all three directional scale factors of the Bianchi I spacetimes increase and after the quantum bounce they reach values similar to their initial values, leading to a merging with classical spacetimes in both schemes.