2016/03/04 by Sachin Pandey, Narayan Banerjee · 3 citations
Physics and Astronomy · #Anisotropy #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Curvature #Extension (predicate logic) #Homogeneous #Noncommutative and Quantum Gravity Theories #Quantum #Type (biology) #Unitary state #gr-qc #hep-th
paper · pdf · doi:10.1088/0031-8949/91/11/115001
published in Physica Scripta 91(11), 115001 (IOP Publishing) · 10 pages, no figure
arxiv created 2016/03/04 · openalex created_date 2016/06/24 · openalex publication_date 2016/10/12 · arxiv updated 2016/11/03 · openalex updated_date 2026/08/05
Contrary to the general belief, there has recently been quite a few examples of unitary evolution of quantum cosmological models. The present work gives more examples, namely Bianchi type VI and type II. These examples are important as they involve varying spatial curvature unlike the most talked about homogeneous but anisotropic cosmological models like Bianchi I, V and IX. We exhibit either an explicit example of the unitary solutions of the Wheeler–DeWitt equation, or at least show that a self-adjoint extension is possible.