34 citations · 201 across the 19 of their papers we have counts for
19 papers
Multi-field inflation from a higher derivative N = 1 Supergravity model
G. A. Diamandis, B. C. Georgalas, K. Kaskavelis +1
We study the cosmological evolution of a N = 1 supergravity model, dual to a higher derivative supergravity model coupled to scalar fields so that in the Einstein frame the model i…
Deforming the Starobinsky model in ghost-free higher derivative supergravities
G. A. Diamandis, B. C. Georgalas, K. Kaskavelis +2
We consider higher derivative supergravities that are dual to ghost-free supergravity theories in the Einstein frame. The duality is implemented by deforming the Kähler funct…
Inflation in supergravity with non-minimal superpotentials
G. A. Diamandis, B. C. Georgalas, K. Kaskavelis +3
We investigate the cosmological inflation in a class of supergravity models that are generalizations of non-supersymmetric models. Although such models have been extensively…
Six-dimensional origin of gravity mediated brane to brane supersymmetry breaking
G. A. Diamandis, B. C. Georgalas, P. Kouroumalou +1
Four dimensional supergravities may be the right framework to describe particle physics at low energies. Its connection to the underlying string theory can be implemented through h…
Universe Acceleration in Brane World Models
C. Chiou-Lahanas, G. A. Diamandis, B. C. Georgalas
We examine the cosmology induced on a brane moving in the background of a five-dimensional black hole, solution of the string effective action. The evolution, determined by the Isr…
The soft supersymmetry breaking in D=5 supergravity compactified on S_1/Z_2 orbifolds
G. A. Diamandis, B. C. Georgalas, P. Kouroumalou +1
We study the origin of the supersymmetry breaking induced by the mediation of gravity and the radion multiplet from the hidden to the visible brane in the context of the N=2, D=5 s…