Supersymmetry breaking and inflation from higher curvature supergravity

Dalianis, Ioannis; Farakos, Fotis; Kehagias, Alex; Riotto, Antonio; Unge, Rikard von

doi:10.1007/jhep01(2015)043

Cited by 37 publications

(56 citation statements)

References 120 publications

(171 reference statements)

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“…Our models share with the former the functional freedom in the choice of the inflaton potential. Given the arbitrary inflationary potential 8) where F(ϕ) is a real analytic function of the inflaton, we can reproduce it by choosing…”

Section: Jhep12(2014)172mentioning

confidence: 99%

On sgoldstino-less supergravity models of inflation

Dall’Agata

Zwirner

2014

J. High Energ. Phys.

113

181

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We go a step further in the search for a consistent and realistic supergravity model of large-field inflation by building a class of models with the following features: during slow-roll, all the scalar fields other than the inflaton are frozen by large inflatondependent masses or removed from the spectrum; at the end of inflation, supersymmetry is spontaneously broken with naturally vanishing classical vacuum energy. We achieve this by combining some geometrical properties of the Kähler potential with the consistent use of a single nilpotent chiral superfield, in one-to-one correspondence with the supersymmetrybreaking direction in field space at the vacuum.

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Section: Jhep12(2014)172mentioning

confidence: 99%

On sgoldstino-less supergravity models of inflation

Dall’Agata

Zwirner

2014

J. High Energ. Phys.

113

181

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“…For a review on inflationary cosmology after the release of the Planck collaboration's results, and for an approach on the initial conditions problem see also [24]. Note that the embedding of the Starobinsky model has been also studied in the old-minimal supergravity [13,[25][26][27][28][29][30], in no-scale supergravity [31][32][33][34], in the linearized non-minimal (20/20) supergravity [35], and also in a generic supergravity setup via gravitino condensates [36,37].…”

Section: Introduction and Discussionmentioning

confidence: 99%

“…The plot of the scalar potential (29) can be seen in Figure 1. It is easy to see that for small ξ values inflation is not ruined, but larger ξ values may pose a threat [13,18].…”

Section: Higher Order Correctionsmentioning

confidence: 99%

Starobinsky inflation from new-minimal supergravity

Farakos

2015

J. Phys.: Conf. Ser.

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Starobinsky inflation from new-minimal supergravity Fotis FarakosInstitute for Theoretical Physics, Masaryk University, 611 37 Brno, Czech Republic E-mail: fotisf@mail.muni.cz Abstract.In the new-minimal supergravity formulation we present the embedding of the R + R 2 Starobinsky model of inflation. Starting from the superspace action we perform the projection to component fields and identify the Starobinsky model in the bosonic sector. Since there exist no other scalar fields, this is by construction a single field model. This higher curvature supergravity also gives rise to a propagating massive vector. Finally we comment on the issues of higher order corrections and initial conditions. Introduction and discussionThe Planck collaboration's constraints on inflation [1, 2] have restricted the inflationary models to those which are characterized by a plateau potential for the inflaton field. More specifically, if the perturbations during inflation [3] are originated by the same field driving inflation, these restrictions can be quantified by the following constraints on the spectral index: n s = 0.9655 ± 0.0062 and the tensor-to-scalar ratio: r < 0.12. A model which lies in the heart of the data is the pure gravitational Starobinsky model [4]

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“…However it should be noted that in the ordinary N = 1 supergravity form, the theory described by (27) is linear in ∼ R, and ghosts exist that are not present in the dual description (33). The appearance of ghost states becomes manifest by the fact that some of the eigenvalues of the complex scalar kinetic matrix are negative.…”

Section: Higher Derivative Theoriesmentioning

confidence: 99%

Deforming the Starobinsky model in ghost-free higher derivative supergravities

et al. 2017

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We consider higher derivative supergravities that are dual to ghost-free N = 1 supergravity theories in the Einstein frame. The duality is implemented by deforming the Kähler function, and/or the superpotential, to include nonlinear dependences on chiral fields that in other approaches play the role of the Lagrange multipliers employed to establish this duality. These models are of the no-scale type, and in the minimal case, require the presence of four chiral multiplets, with a Kähler potential having the structure of the SU (4, 1)/SU (4) × U (1) coset manifold. In the standard N = 1 supergravity formulation, these models are described by a multifield scalar potential, featuring Starobinsky-like behavior in particular directions.

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Supersymmetry breaking and inflation from higher curvature supergravity

Cited by 37 publications

References 120 publications

On sgoldstino-less supergravity models of inflation

On sgoldstino-less supergravity models of inflation

Starobinsky inflation from new-minimal supergravity

Deforming the Starobinsky model in ghost-free higher derivative supergravities

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