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Anisotropic Expansion of Universe in f(R,T) Cosmological Model
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In this article, a detailed analysis of the cosmic dipoles in f(R,T) cosmological model is presented, showing that the maximum anisotropic deviation direction is (l,b) = (137.7 −32).Abstract:
Recent astronomical observations show that the universe may be anisotropic on large scales. The Union2 SnIa data hint that the universe has a preferred direction. If such a cosmological privileged axis indeed exists, one has to consider an anisotropic expanding Universe, instead of the isotropic cosmological model. In this paper, we present a detailed analysis of the cosmic dipoles in f(R,T) Cosmological Model. the maximum anisotropic deviation direction is (l,b) = (137.7 −32read more
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Book
Quantum Fields in Curved Space
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TL;DR: A comprehensive review of the subject of gravitational effects in quantum field theory can be found in this paper, where special emphasis is given to the Hawking black hole evaporation effect, and to particle creation processes in the early universe.
Journal ArticleDOI
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Charles L. Bennett,Robert S. Hill,Gary Hinshaw,Davin Larson,Kristine M. Smith,Jo Dunkley,B. Gold,Mark Halpern,N. Jarosik,Alan J. Kogut,Eiichiro Komatsu,Michele Limon,S. S. Meyer,Michael R. Nolta,N. Odegard,Lyman A. Page,David N. Spergel,Gregory S. Tucker,Janet L. Weiland,Edward J. Wollack,Edward L. Wright +20 more
TL;DR: In this article, the authors examined the properties of the power spectrum data with respect to the six-parameter CDM model and found no significant anomalies, and concluded that there is no compelling evidence for deviations from the?CDM model, which is generally an acceptable statistical fit to WMAP and other cosmological data.
Journal ArticleDOI
Consistently large cosmic flows on scales of 100 h−1 Mpc: a challenge for the standard ΛCDM cosmology
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Consistently Large Cosmic Flows on Scales of 100 Mpc/h: a Challenge for the Standard LCDM Cosmology
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