Inflation in Supersymmetric SU(5)

Khalil, S.; Rehman, M. U.; Shafi, Q.; Zaakouk, E. A.

doi:10.48550/arxiv.1010.3657

Cited by 12 publications

(32 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the gauged supermultiplets are in the adjoint representation, the leading order non-renormalizable term is cubic in Φ. For a detailed analysis of shifted inflation with an SU(5) GUT, see Ref [17]…”

mentioning

confidence: 99%

Red spectral tilt and observable gravity waves in shifted hybrid inflation

et al. 2011

View full text Add to dashboard Cite

We consider supersymmetric shifted hybrid inflation models with a red tilted scalar spectral index n s in agreement with the WMAP 7-yr central value. If non-minimal supergravity corrections are included, these models can also support a tensor-to-scalar ratio as large as r ≃ 0.02, which may be observable by the Planck Satellite. In contrast to the standard supersymmetric hybrid inflation scenario, topological defects produced via gauge symmetry breaking are inflated away in the shifted version of the theory.

show abstract

mentioning

confidence: 99%

Red spectral tilt and observable gravity waves in shifted hybrid inflation

et al. 2011

View full text Add to dashboard Cite

show abstract

“…In this paper, we have studied phase transition driven by Hubble-induced mass in supersymmetric F-term inflation models 10 . We have found that in supersymmetric F-term inflation models the breaking scale of GUT and other intermediate symmetry group, which is associated with the production of monopoles and domain walls, are constrained to be larger than the Hubble scale during inflation, because the Hubble-induced mass inevitably arises in supersymmetric F-term inflation models [18].…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…Let us summarize the results of this section for the model given by ( 9) and (10). i) The case of M < 10 13 κ −1 GeV is incompatible with the standard cosmological scenario because monopoles would overclose the Universe.…”

Section: B Constraints On the Model Parametermentioning

confidence: 97%

“…For example, in Ref. [10], the shifted inflation is embedded in the SU(5) GUT model and the monopole problem is avoided by violating the SU(5) gauge symmetry during the course of inflation already. In Ref.…”

Section: Phase Transition In F-term Inflationmentioning

confidence: 99%

“…In the grand unified theories (GUTs) [2,3], the gauge interaction is described by a gauge group G GUT with a single gauge coupling constant, which contains the standard model gauge group, G SM = SU(3) C × SU(2) L × U(1) Y , as a subgroup. Thus far, many models of GUTs, especially its supersymmetric version (SUSY GUTs) have been proposed, such as those based on SU (5) or SO (10). Some of them directly break down to G SM and others have one or more intermediate symmetry groups between G GUT and G SM .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phase transition and monopole production in supergravity inflation

2012

View full text Add to dashboard Cite

In F-term supergravity inflation models, scalar fields other than the inflaton generically receive a Hubble-induced mass, which may restore gauge symmetries during inflation and phase transitions may occur during or after inflation as the Hubble parameter decreases. We study monopole (and domain wall) production associated with such a phase transition in chaotic inflation in supergravity and obtain a severe constraint on the symmetry breaking scale which is related with the tensor-toscalar ratio. Depending on model parameters, it is possible that monopoles are sufficiently diluted to be free from current constraints but still observable by planned experiments.

show abstract

Constraining $ \mathcal{N} $ = 1 supergravity inflationary framework with non-minimal Kähler operators

Choudhury

Mazumdar

Pukartas

2014

J. High Energ. Phys.

View full text Add to dashboard Cite

In this paper we will illustrate how to constrain unavoidable Kähler corrections for N = 1 supergravity (SUGRA) inflation from the recent Planck data. We will show that the non-renormalizable Kähler operators will induce in general non-minimal kinetic term for the inflaton field, and two types of SUGRA corrections in the potential -the Hubbleinduced mass (c H ), and the Hubble-induced A-term (a H ) correction. The entire SUGRA inflationary framework can now be constrained from (i) the speed of sound, c s , and (ii) from the upper bound on the tensor to scalar ratio, r ⋆ . We will illustrate this by considering a heavy scalar degree of freedom at a scale, M s , and a light inflationary field which is responsible for a slow-roll inflation. We will compute the corrections to the kinetic term and the potential for the light field explicitly. As an example, we will consider a visible sector inflationary model of inflation where inflation occurs at the point of inflection, which can match the density perturbations for the cosmic microwave background radiation, and also explain why the universe is filled with the Standard Model degrees of freedom. We will scan the parameter space of the non-renormalizable Kähler operators, which we find them to be order O(1), consistent with physical arguments. While the scale of heavy physics is found to be bounded by the tensor-to scalar ratio, and the speed of sound, O 10 11 ≤ M s ≤ 10 16 GeV, for 0.02 ≤ c s ≤ 1 and 10 −22 ≤ r ⋆ ≤ 0.12.

show abstract

Inflation in Supersymmetric SU(5)

Cited by 12 publications

References 23 publications

Red spectral tilt and observable gravity waves in shifted hybrid inflation

Red spectral tilt and observable gravity waves in shifted hybrid inflation

Phase transition and monopole production in supergravity inflation

Constraining $ \mathcal{N} $ = 1 supergravity inflationary framework with non-minimal Kähler operators

Contact Info

Product

Resources

About