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20152026
most citedGravitational portals in the early Universe

101 citations · 728 across the 46 of their papers we have counts for

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7 papers · 1 filter

hep-th2023

Accelerated Discovery of Machine-Learned Symmetries: Deriving the Exceptional Lie Groups G2, F4 and E6

Roy T. Forestano, Konstantin T. Matchev, Katia Matcheva +3

Recent work has applied supervised deep learning to derive continuous symmetry transformations that preserve the data labels and to obtain the corresponding algebras of symmetry ge…

hep-th2023

Testing the Scalar Weak Gravity Conjecture in No-scale Supergravity

Emilian Dudas, Tony Gherghetta, Keith A. Olive +1

We explore possible extensions of the Weak Gravity Conjecture (WGC) to scalar field theories. To avoid charged black hole remnants, the WGC requires the existence of a particle wit…

hep-th2023

Supergravity Scattering Amplitudes

Emilian Dudas, Tony Gherghetta, Keith A. Olive +1

Supergravity theories with non-minimal Kähler potentials are characterized by a non-trivial field space manifold with corresponding non-trivial kinetic terms. The scattering amplit…

hep-th2021★ 31 cited

Slow and Safe Gravitinos

Emilian Dudas, Marcos A. G. Garcia, Yann Mambrini +3

It has been argued that supergravity models of inflation with vanishing sound speeds, , lead to an unbounded growth in the production rate of gravitinos. We consider several m…

hep-th2019★ 11 cited

From Minkowski to de Sitter in Multifield No-Scale Models

John Ellis, Balakrishnan Nagaraj, Dimitri V. Nanopoulos +2

We show the uniqueness of superpotentials leading to Minkowski vacua of single-field no-scale supergravity models, and the construction of dS/AdS solutions using pairs of these sin…

hep-th2019★ 41 cited

Unified No-Scale Attractors

John Ellis, Dimitri V. Nanopoulos, Keith A. Olive +1

We have presented previously a general treatment of Starobinsky-like inflation in no-scale supergravity where the tensor-to-scalar ratio , and is the tilt o…

hep-th2018★ 38 cited

A General Classification of Starobinsky-like Inflationary Avatars of SU(2,1)/SU(2) x U(1) No-Scale Supergravity

John Ellis, Dimitri V. Nanopoulos, Keith A. Olive +1

Measurements of the cosmic microwave background (CMB) favour models of inflation with a small tensor-to-scalar ratio r, as predicted by the Starobinsky R + R^2 model. It has been s…