53 citations · 279 across the 14 of their papers we have counts for
3 papers · 1 filter
The CMSSM Survives Planck, the LHC, LUX-ZEPLIN, Fermi-LAT, H.E.S.S. and IceCube
John Ellis, Keith A. Olive, Vassilis C. Spanos +1
We revisit the viability of the CMSSM, searching for regions of parameter space that yield a neutralino dark matter density compatible with Planck measurements, as well as LHC cons…
Primordial Black Holes and Gravitational Waves in Multi-Axion-Chern-Simons Inflation
Nick E. Mavromatos, Vassilis C. Spanos, Ioanna D. Stamou
We study aspects of inflation and the possibility of enhanced production of primordial black holes (PBHs) and gravitational waves (GWs) in a string-inspired model of two axion fiel…
Gravitational Waves From No-Scale Supergravity
Vassilis C. Spanos, Ioanna D. Stamou
In this paper we study four concrete models, based on no-scale supergravity with SU(2,1)/SU(2) U(1) symmetry. We modify either the Kähler potential or the superpotential, w…