Enhancing inflationary tensor modes through spectator fields
نویسندگان
چکیده
منابع مشابه
The Scalar-Tensor Inflationary Cosmology
In this paper the scalar-tensor theory of gravity is assumed to describe the evolution of the universe and the gravitational scalar φ is ascribed to play the role of inflaton. The theory is characterized by the specified coupling function ω(φ) and the cosmological function λ(φ). The function λ(φ) is nearly constant for 0 < φ < 0.1 and λ(1) = 0. The functions λ(φ) and ω(φ) provide a double-well ...
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We introduce the real space correlation function of B-mode polarization of the cosmic microwave background (CMB) as a probe of superhorizon tensor perturbations created by inflation. By causality, any non-inflationary mechanism for gravitational wave production after reheating, like global phase transitions or cosmic strings, must have vanishing correlations for angular separations greater than...
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vii Dedication ix Acknowledgements x I Overview 1 1 Overview 2 1.1 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Methods and Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.4 Notation . . . . . ...
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Vinícius Miranda, Wayne Hu, and Peter Adshead Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637, USA The Capes Foundation, Ministry of Education of Brazil, Brasília DF 70359-970, Brazil Kavli Institute for Cosmological Physics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA Department of Physics, University of Illinois at Urban...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2013
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.88.103518