190 citations · 4k across the 93 of their papers we have counts for
94 papers
N=2 -> 0 super no-scale models and moduli quantum stability
Costas Kounnas, Herve Partouche
We consider a class of heterotic N=2 -> 0 super no-scale Z_2-orbifold models. An appropriate stringy Scherk-Schwarz supersymmetry breaking induces tree level masses to all massless…
Super no-scale models in string theory
Costas Kounnas, Herve Partouche
We consider "super no-scale models" in the framework of the heterotic string, where the N=4,2,1 --> 0 spontaneous breaking of supersymmetry is induced by geometrical fluxes realizi…
Stringy N = 1 super no-scale models
Costas Kounnas, Herve Partouche
N=1 no-scale models describe at tree level the spontaneous breaking of supersymmetry at an arbitrary scale m_{3/2}, with vanishing vacuum energy. We define N=1 super no-scale model…
Aspects of Quadratic Gravity
Luis Alvarez-Gaume, Alex Kehagias, Costas Kounnas +2
We discuss quadratic gravity where terms quadratic in the curvature tensor are included in the action. After reviewing the corresponding field equations, we analyze in detail the p…
Black Hole Solutions in Gravity
Alex Kehagias, Costas Kounnas, Dieter Lust +1
We find static spherically symmetric solutions of scale invariant gravity. The latter has been shown to be equivalent to General Relativity with a positive cosmological const…
inflation from scale invariant supergravity and anomaly free superstrings with fluxes
Costas Kounnas, Dieter Lüst, Nicolaos Toumbas
The scale invariant gravity theory coupled to conformally invariant matter is investigated. We show that in the non-supersymmetric case the conformally coupled scalars…