Dapor-Liegener formalism of loop quantum cosmology for Bianchi I spacetimes
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DOI: 10.1103/physrevd.101.023520
Abstract: We discuss the quantization of vacuum Bianchi I spacetimes in the modified formalism of loop quantum cosmology recently proposed by Dapor and Liegener. This modification is based on a regularization procedure where both the Euclidean… read more here.
Keywords: loop quantum; quantum cosmology; formalism loop; bianchi spacetimes ... See more keywords
Hamiltonian theory of classical and quantum gauge invariant perturbations in Bianchi I spacetimes
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DOI: 10.1103/physrevd.101.123531
Abstract: We derive a Hamiltonian formulation of the theory of gauge invariant, linear perturbations in anisotropic Bianchi I spacetimes, and describe how to quantize this system. The matter content is assumed to be a minimally coupled… read more here.
Keywords: classical quantum; hamiltonian theory; gauge invariant; theory classical ... See more keywords
Observational consequences of Bianchi I spacetimes in loop quantum cosmology
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DOI: 10.1103/physrevd.102.043523
Abstract: Anisotropies generically dominate the earliest stages of expansion of a homogeneous universe. They are particularly relevant in bouncing models, since shears grow in the contracting phase of the cosmos, making the isotropic situation unstable. This… read more here.
Keywords: loop quantum; quantum cosmology; observational consequences; bianchi spacetimes ... See more keywords