Constrained superfields in supergravity

Dall’Agata, Gianguido; Farakos, Fotis

doi:10.1007/jhep02(2016)101

Cited by 57 publications

(104 citation statements)

References 59 publications

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“…To further simplify the model, we will use a constraint which has become very useful in supergravity cosmology [35][36][37] for the description of the inflationary sector. The constraint we impose on A is…”

Section: Reheatingmentioning

confidence: 99%

Scanning of the supersymmetry breaking scale and the gravitino mass in supergravity

Farakos

Kehagias

Racco³

et al. 2016

J. High Energ. Phys.

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Abstract:We consider the minimal three-form N = 1 supergravity coupled to nilpotent three-form chiral superfields. The supersymmetry breaking is sourced by the three-forms of the chiral multiplets, while the value of the gravitino mass is controlled by the threeform of the supergravity multiplet. The three-forms can nucleate membranes which scan both the supersymmetry breaking scale and the gravitino mass. The peculiar supergravity feature that the cosmological constant is the sum of a positive contribution from the supersymmetry breaking scale and a negative contribution from the gravitino mass makes the cosmological constant jump. This can lead to a phenomenologically allowed small value of the cosmological constant even though the supersymmetry breaking scale and the gravitino mass are dynamically large.

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Section: Reheatingmentioning

confidence: 99%

Scanning of the supersymmetry breaking scale and the gravitino mass in supergravity

Farakos

Kehagias

Racco³

et al. 2016

J. High Energ. Phys.

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“…Its worldvolume theory includes a Volkov-Akulov fermion goldstino [3,4], which can be equivalently described in terms of a nilpotent scalar superfield S with S 2 (x, θ) = 0 [5][6][7][8][9][10][11][12][13][14][15]. This nilpotent superfield allows for a manifestly supersymmetric description of the uplift to a de Sitter minimum [16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

D 3 ¯ $$ \overline{D3} $$ induced geometric inflation

Каллош

Linde

Roest

et al. 2017

J. High Energ. Phys.

126

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Effective supergravity inflationary models induced by anti-D3 brane interaction with the moduli fields in the bulk geometry have a geometric description. The Kähler function carries the complete geometric information on the theory. The non-vanishing bisectional curvature plays an important role in the construction. The new geometric formalism, with the nilpotent superfield representing the anti-D3 brane, allows a powerful generalization of the existing inflationary models based on supergravity. They can easily incorporate arbitrary values of the Hubble parameter, cosmological constant and gravitino mass. We illustrate it by providing generalized versions of polynomial chaotic inflation, Tand E-models of α-attractor type, disk merger. We also describe a multi-stage cosmological attractor regime, which we call cascade inflation.

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“…Constrained superfields and non-linear realizations have various applications: For example the Supersymmetric Standard Model [14][15][16], the current de Sitter phase of our universe [17][18][19][20][21][22][23][24][25][26][27], or the inflationary phase [28][29][30][31][32][33][34][35][36][37][38][39]. The String/Brane origin of constrained superfields is also under study [40][41][42][43][44][45][46][47][48][49][50][51].…”

Section: Introduction and Discussionmentioning

confidence: 99%