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arxiv: 2510.14021 · v3 · pith:ZIL5DOTKnew · submitted 2025-10-15 · 🌀 gr-qc · astro-ph.CO· hep-ph· hep-th

Quantum Damping of Cosmological Shear: A New Prediction from Loop Quantum Cosmologies

Wen-Cong Gan , Leila L. Graef , Rudnei O. Ramos , Gustavo S. Vicente , Anzhong Wang This is my paper
classification 🌀 gr-qc astro-ph.COhep-phhep-th
keywords quantumbounceloopmechanismmlqc-ishearuniverseabsent
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We study the dynamics of the Bianchi I universe in modified loop quantum cosmology (mLQC-I) and uncover a robust mechanism for isotropization: the shear is dynamically suppressed after the bounce and decays rapidly in the quantum post-bounce regime, independently of the equation of state of standard matter sources. This naturally drives the Universe toward a homogeneous and isotropic expanding phase without fine-tuning. Our results show that mLQC-I provides a new quantum-gravitational mechanism for suppressing anisotropies, absent in other bounce models.

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  1. Genericness of quantum damping of cosmological shear in modified loop quantum cosmology

    gr-qc 2026-04 unverdicted novelty 4.0

    For genuine 3D collapsing Bianchi I initial conditions in mLQC-I, quantum effects damp shear exponentially after the bounce, yielding an isotropic attractor independent of matter content under the weak energy condition.