Non-relativistic matter and dark energy in a quantum conformal model期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

Non-relativistic matter and dark energy in a quantum conformal model

Institution:	1. Department of Physics, IIT Kanpur, Kanpur 208 016, India;2. Center for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad 500 032, India;1. Skobeltsyn Institute for Nuclear Physics Lomonosov Moscow State University, Moscow, Russia;2. Physics Department of Lomonosov Moscow State University, Moscow, Russia;1. Institute of Nuclear Physics PAN, Kraków, Poland;2. Institute for Nuclear Physics (IKP), Karlsruhe Institute of Technology, Karlsruhe, Germany;3. Argelander Institute for Astronomy (AIfA), Bonn, Germany;1. Gran Sasso Science Institute, viale Francesco Crispi, 7 L’Aquila 67100 (AQ), Italy;2. Institute for Space Sciences (CSIC/IEEC), Barcelona E-08193, Spain;3. Dublin Institute of Advanced Studies, 10 Burlington Road, Dublin 4, Ireland;4. Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, Heidelberg D-69117, Germany;1. KTH Royal Institute of Technology, Department of Physics, 106 91 Stockholm, Sweden;2. The Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Centre, 106 91 Stockholm, Sweden;3. Hiroshima University, Department of Physical Science, Hiroshima 739-8526, Japan;4. Max-Planck-Institut für Physik, D-80805 München, Germany;1. Institut für Kernphysik, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany;2. Instituto de Física y Matemáticas, Universidad Michoacana, Morelia, Michoacán, Mexico;3. ASTRON, Dwingeloo, The Netherlands;4. Dipartimento di Fisica, Università degli Studi di Torino, Torino, Italy;5. Max-Planck-Institut für Radioastronomie, Bonn, Germany;6. Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany;7. National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania;8. Osservatorio Astrofisico di Torino, INAF Torino, Torino, Italy;9. Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil;10. Department of Astrophysics, Radboud University Nijmegen, AJ Nijmegen, The Netherlands;11. Fachbereich C, Physik, Bergische Universität Wuppertal, Wuppertal, Germany;12. Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany;13. Faculty of Natural Sciences and Engineering, Universität Siegen, Siegen, Germany;14. Institute for Space Sciences, Bucharest-Magurele, Romania;15. Department of Astrophysics, National Centre for Nuclear Research, Łódź, Poland;p. Studsvik Scandpower GmbH, Hamburg, Germany;q. Department of Physics, University of Bucharest, Bucharest, Romania

Abstract:	We consider a generalization of the Standard Model whose action displays conformal invariance in d dimensions. The model contains a strongly coupled dark matter sector which breaks conformal symmetry dynamically. The model evades conformal anomaly and leads to identically zero vacuum energy in flat space-time. Hence it does not suffer from the problem of fine tuning of the cosmological constant. We determine the contribution of non-relativistic matter to the energy-momentum tensor and determine a parameter regime in which it approximately reduces to the standard result. We show how dark energy and dark matter arises in this model. We discuss the parameter range for which the model reduces to the ΛCDM model and hence is consistent with observations.

Keywords:
本文献已被 ScienceDirect 等数据库收录！

设为首页 | 免责声明 | 关于勤云 | 加入收藏