Alternative k=-1 loop quantum cosmology

Yang J, Zhang C, Zhang X (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Physical Review D American Physical Society

Book Volume: 107

Article Number: 046012

Journal Issue: 4

DOI: 10.1103/PhysRevD.107.046012

Abstract

An alternative quantization of the gravitational Hamiltonian constraint of the k=-1 Friedmann-Robertson-Walker model is proposed by treating the Euclidean term and the Lorentzian term independently, mimicking the treatment of full-loop quantum gravity. The resulting Hamiltonian constraint operator for the k=-1 model with a massless scalar field is successfully constructed, and it is shown to have the corrected classical limit. Compared to the former quantization schemes in the literature where only the Euclidean term is quantized, the new quantum dynamics of the k=-1 model with a massless scalar field indicates that the classical big bang singularity is replaced by an asymmetric quantum bounce.

Authors with CRIS profile

Cong Zhang Chair for Theoretical Physics III (Quantum Gravity)

Additional Organisation(s)

FAU Profilzentrum Licht.Materie.Quantentechnologien (FAU LMQ)

Involved external institutions

Guizhou-Universität / 贵州大学 CN China (CN) South China University of Technology (SCUT) / 华南理工大学 CN China (CN)

How to cite

APA:

Yang, J., Zhang, C., & Zhang, X. (2023). Alternative k=-1 loop quantum cosmology. Physical Review D, 107(4). https://dx.doi.org/10.1103/PhysRevD.107.046012

MLA:

Yang, Jinsong, Cong Zhang, and Xiangdong Zhang. "Alternative k=-1 loop quantum cosmology." Physical Review D 107.4 (2023).

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