432 citations · 3.2k across the 70 of their papers we have counts for
28 papers · 1 filter
Toward a gravitational network: Bridging metric-affine gravity and no-scale supergravity
Ioannis D. Gialamas, Theodoros Katsoulas, Kyriakos Tamvakis
We consider a class of models in the framework of metric-affine gravity and establish their correspondence to the bosonic sector of a class of no-scale supergravity models. The exc…
Dynamically induced spin-2 mass in a Weyl-invariant framework
Ioannis D. Gialamas, Kyriakos Tamvakis
We combine the ghost-free bimetric theory of gravity with the concept of local Weyl invariance, realized in the framework of Einstein-Cartan gravity. The gravitational sector, char…
Ultraviolet behaviour of Higgs inflation models
Ignatios Antoniadis, Anthony Guillen, Kyriakos Tamvakis
We study the ultraviolet behaviour of Higgs inflation models above the apparent unitarity violation scale arising from the large non minimal coupling to gravity, by computing on-sh…
Towards a formulation of supergravity
G. A. Diamandis, A. B. Lahanas, K. Tamvakis
The supersymmetric completion of gravity is known to be equivalent to standard supergravity coupled to two chiral supermultiples with a Kähler potential of the no-scale typ…
Inflationary behavior of gravity in a conformal framework
A. B. Lahanas, K. Tamvakis
Models of inflation are tightly constrained by the PLANCK satellite data. Among them, Starobinsky's model with an exponential type potential seems to be challenged by the recent BI…
Scalar Emission in the Bulk in a Rotating Black Hole Background
S. Creek, O. Efthimiou, P. Kanti +1
We study the emission of scalars into the bulk from a higher-dimensional rotating black hole. We obtain an analytic solution to the field equation by employing matching techniques…