搜索结果: 1-15 共查到“天文学 Inflation”相关记录42条 . 查询时间(0.049 秒)
Inflation and the cosmological constant
general relativity infl ationary universe cosmological constant
2011/10/14
A particular compensation-type solution of the main cosmological constant problem has been proposed recently, with two massless vector fields dynamically canceling an arbitrary cosmological constant \...
Higgs inflation in minimal supersymmetric SU(5) GUT
Higgs inflation minimal supersymmetric
2011/10/14
The Standard Model Higgs boson with large non-minimal coupling to the gravitational curvature can drive cosmological inflation. We study this type of inflationary scenario in the context of supersymme...
Dynamics of Cosmological Perturbations in Multi-Speed Inflation
Dynamics Cosmological Perturbations Multi-Speed Inflation
2011/10/18
We study a multi-field inflationary theory with separable Lagrangian, which has different speed of sound for each field. We find that the fields always coupled at perturbative level through gravitatio...
We consider inflation within the context of what is arguably the simplest non-metric extension of Einstein gravity. There non-metricity is described by a single graviscalar field with a non-minimal ki...
Observational consequences of the Standard Model Higgs inflation variants
cosmic microwave background cosmological parameters early universe infl a-tion observations
2011/10/10
We consider the possibility to observationally differentiate the Standard Model (SM) Higgs driven inflation with non-minimal couplingto gravity from other variants of SM Higgs inflation based on the s...
Natural Warm Inflation
Infl ation Axion
2011/10/11
We derive the requirements that a generic axion-like field has to satisfy in order to play the role of the inflaton field in the warm inflation scenario. Compared to the parameter space in ordinary na...
Inflation and primordial non-Gaussianities of "generalized Galileons"
Inflation primordial non-Gaussianities
2011/10/9
We set up cosmological perturbation theory and study the cosmological implications of the so-called `generalized Galileon' developed in \cite{Deffayet:2011gz,horndeski}.This is the most general scalar...
Primordial black hole formation and hybrid inflation
Primordial formation hybrid inflation
2011/9/29
We calculate the contribution to the curvature perturbation, that is generated while the waterfall field grows exponentially (which can occur only if the waterfall field mass is $m\gg H$). We consider...
Observational test of inflation in loop quantum cosmology
cosmology of theories beyond the SM cosmological perturbation theory quantum cosmology quantum gravity phenomenology
2011/10/18
We study in detail the power spectra of scalar and tensor perturbations generated during inflation in loop quantum cosmology (LQC). After clarifying in a novel quantitative way how inverse-volume corr...
Entropic Force Scenarios and Eternal Inflation
Entropic Force Scenarios Eternal Inflation
2011/10/18
We examine various entropic inflation scenarios, under the light of eternality. After describing the inflation realization and the normal condition for inflation to last at the background level, we in...
We propose a model of inflation where the Chern-Simons interaction and vector fields play a central role in generating an inflationary epoch. As a result, in accord with the APS mechanism, the Sakharo...
We consider a simple extension of the Standard Model Higgs inflation with one new real scalar field which preserves unitarity up to the Planck scale. The new scalar field (called sigma) completes in ...
Inflation with improved D3-brane potential and the fine tunings associated with the model
improved D3-brane potential the fine tunings associated
2011/1/13
We investigate brane-antibrane inflation in a warped deformed conifold background that includes contributions to the potential arising from imaginary anti-self-dual (IASD) fluxes including the term wi...
Inflation in string theory: a graceful exit to the real world
Inflation in string theory the real world
2011/1/13
The most important criteria for a successful inflation are to explain the observed temperature anisotropy in the cosmic microwave background radiation, and exiting inflation in a vacuum where it can ...
Observational signatures of holographic models of inflation
Observational signatures holographic models
2011/1/13
We discuss the phenomenology of recently proposed holographic models of inflation, in which the very early universe is non-geometric and is described by a dual three-dimensional quantum field theory (...