Vector inflation

Golovnev, Alexey; Mukhanov, Viatcheslav; Vanchurin, Vitaly

doi:10.1088/1475-7516/2008/06/009

Cited by 352 publications

(534 citation statements)

References 13 publications

Supporting

Mentioning

516

Contrasting

Unclassified

Order By: Relevance

“…This expression is valid up to first order in slow roll. 8 The coefficient C can be now set from evaluating the solution (25) at the asymptotic past τ in → −∞, and from the consideration made right after eq. (21):…”

Section: Scalar Curvature Perturbations On the Frw Solutionmentioning

confidence: 99%

“…8 The explicit expression (25) has not been given in [11], and we reported its derivation since some of the subdominant terms in ζ and ζ are needed for the power spectrum computation that we perform in Section V. We have written this expression in the most compact way; doing so, however, it contains also terms which are second or higher order in slow roll, and which should be disregarded. Such terms do not enter in any of our computations.…”

Section: Scalar Curvature Perturbations On the Frw Solutionmentioning

confidence: 99%

See 1 more Smart Citation

Anisotropy in solid inflation

Bartolo

Matarrese

Peloso

et al. 2013

J. Cosmol. Astropart. Phys.

106

150

View full text Add to dashboard Cite

In the model of solid / elastic inflation, inflation is driven by a source that has the field theoretical description of a solid. To allow for prolonged slow roll inflation, the solid needs to be extremely insensitive to the spatial expansion. We point out that, because of this property, the solid is also rather inefficient in erasing anisotropic deformations of the geometry. This allows for a prolonged inflationary anisotropic solution, providing the first example with standard gravity and scalar fields only which evades the conditions of the so called cosmic no-hair conjecture. We compute the curvature perturbations on the anisotropic solution, and the corresponding phenomenological bound on the anisotropy. Finally, we discuss the analogy between this model and the f (φ) F 2 model, which also allows for anisotropic inflation thanks to a suitable coupling between the inflaton φ and a vector field. We remark that the bispectrum of the curvature perturbations in solid inflation is enhanced in the squeezed limit and presents a nontrivial angular dependence, as had previously been found for the f (φ) F 2 model.

show abstract

Section: Scalar Curvature Perturbations On the Frw Solutionmentioning

confidence: 99%

Section: Scalar Curvature Perturbations On the Frw Solutionmentioning

confidence: 99%

Anisotropy in solid inflation

Bartolo

Matarrese

Peloso

et al. 2013

J. Cosmol. Astropart. Phys.

106

150

View full text Add to dashboard Cite

show abstract

“…Only recently the possibility of significance of higher spin fields has begun to attract some modest interest. Vector inflation [3], using either time-like [4] or space-like [5] components, or featuring the vector as a curvaton [6] has been taken under consideration [7] and the stability of the vector models has been analyzed in details [8]. Vector dark energy [9] could allow alleviation of the coincidence problem [10] and even an electromagnetic origin of the cosmological term [11].…”

Section: Introductionmentioning

confidence: 99%

Three-form cosmology

Koivisto

Nunes

2010

Physics Letters B

View full text Add to dashboard Cite

Cosmology of self-interacting three-forms is investigated. The minimally coupled canonical theory can naturally generate a variety of isotropic background dynamics, including scaling, possibly transient acceleration and phantom crossing. An intuitive picture of the cosmological dynamics is presented employing an effective potential. Numerical solutions and analytical approximations are provided for scenarios which are potentially important for inflation or dark energy.

show abstract

“…What should be noted is the scalar curvature to be taken as the mass of 4D vector is first proposed in ref. [26] to be used in studying the inflation of our 4D universe. But adding a mass term into the 5D vector fields action will break its gauge invariance, so in ref.…”

Section: Jhep05(2018)072mentioning

confidence: 99%

Localization of U(1) gauge vector field on flat branes with five-dimension (asymptotic) AdS5 spacetime

Zhao

Xie

2018

J. High Energ. Phys.

View full text Add to dashboard Cite

In order to localize U(1) gauge vector field on Randall-Sundrum-like braneworld model with infinite extra dimension, we propose a new kind of non-minimal coupling between the U(1) gauge field and the gravity. We propose three kinds of coupling methods and they all support the localization of zero mode. In addition, one of them can support the localization of massive modes. Moreover, the massive tachyonic modes can be excluded. And our method can be used not only in the thin braneword models but also in the thick ones.

show abstract

Vector inflation

Cited by 352 publications

References 13 publications

Anisotropy in solid inflation

Anisotropy in solid inflation

Three-form cosmology

Localization of U(1) gauge vector field on flat branes with five-dimension (asymptotic) AdS5 spacetime

Contact Info

Product

Resources

About