Inflation in Einstein-Cartan theory with energy-momentum tensor with spin |
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| Affiliation: | 1. Departament de Dinàmica de la Terra i de l''Oceà, Facultat de Ciències de la Terra, Universitat de Barcelona, Spain;2. Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Spain;3. CN Instituto Geológico y Minero de España (IGME)-Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain;4. Institut Botànic de Barcelona, CSIC-Ajuntament de Barcelona, Barcelona, Spain;5. Division of Invertebrate Zoology, American Museum of Natural History, New York, USA;6. Instituto de Geociências, Universidade Federal da Bahia, Salvador da Bahia, Brazil;7. National Museum of Natural History, Smithsonian Institution, Washington, D.C, USA;8. Department of Entomology, University of Maryland, MD, USA;9. College of Life Sciences & Academy for Multidisciplinary Studies, Capital Normal University, Beijing, China;10. Department of Earth Sciences, University of Oxford, Oxford, UK;11. Department of Earth & Planetary Sciences, Northwestern University, Evanston, IL, USA;12. Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt, Frankfurt am Main, Germany;13. Departamento de Biodiversidad, Ecología y Evolución, Facultad de Biología, Universidad Complutense, Madrid, Spain;14. Natural Sciences Department, Faculty of Science II, Lebanese University, Fanar-El-Matn, Lebanon;15. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China;p. Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia;q. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China;r. National Museum, Prague, Czech Republic;s. Department de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, Spain;t. Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d''Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, CP50 Paris, France;u. School of Earth Sciences, University of Western Australia, Crawley, Australia;v. Departamento de Explotación y Prospección de Minas, Universidad de Oviedo, Oviedo, Spain;w. Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biología, Universitat de Barcelona, Spain;x. Smithsonian Tropical Research Institute, Panama;y. Department of Biology, Institute of Biology and Biotechnology, University of Rzeszów, Poland;z. Museo de Ciencias Naturales de Álava, Vitoria-Gasteiz, and Cueva El Soplao, Celis, Santander, Cantabria, Spain;11. Departamento de Geodinámica, Estratigrafía y Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Spain;12. Departamento de Biología de Sistemas, Universidad de Alcalá, Alcalá de Henares, Spain;13. Géosciences Rennes - UMR 6118, University of Rennes, CNRS, Rennes, France;14. Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, Spain;15. Departamento de Biología, Facultad de Ciencias, Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain;16. Oxford University Museum of Natural History, Oxford, UK |
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| Abstract: | Generalized, or “power-law”, inflation is shown to necessarily exist for a simple, anisotropic, (Bianchi type I) cosmology in the Einstein-Cartan gravitational theory with the Ray-Smalley improved energy-momentum tensor with spin. Formal solution of the EC field equations with the fluid equations of motion explicitly shows inflation caused by the RS spin angular kinetic energy density. |
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