180 citations · 530 across the 6 of their papers we have counts for
10 papers · 1 filter
The Matrix Reloaded - on the Dark Energy Seesaw
Kari Enqvist, Steen Hannestad, Martin S. Sloth
We propose a novel mechanism for dark energy, based on an extended seesaw for scalar fields, which does not require any new physics at energies below the TeV scale. A very light qu…
Non-Gaussianity from Instant and Tachyonic Preheating
Kari Enqvist, Asko Jokinen, Anupam Mazumdar +2
We study non-Gaussianity in two distinct models of preheating: instant and tachyonic. In instant preheating non-Gaussianity is sourced by the local terms generated through the coup…
Seed perturbations for primordial magnetic fields from MSSM flat directions
Kari Enqvist, Asko Jokinen, Anupam Mazumdar
We demonstrate that the MSSM flat directions can naturally account for the seed magnetic fields in the early Universe. The non-zero vacuum expectation value of an MSSM flat directi…
Baryogenesis in models with large extra dimensions
Anupam Mazumdar, Rouzbeh Allahverdi, Kari Enqvist +1
We describe how difficult it is to realise baryogenesis in models where the fundamental scale in nature is as low as TeV. The problem becomes even more challenging if we assume tha…
Testing B-ball cosmology with the CMB
Kari Enqvist
In D-term inflation models, the fluctuations of squark fields in the flat directions give rise to isocurvature density fluctuations stored in the Affleck-Dine condensate. After the…
Dark Matter from Unstable B-balls
Kari Enqvist
The spectrum of MSSM admits solitons carrying baryonic charge, or B-balls. In an inflationary universe they can be produced in significant numbers by a break-up of a scalar condens…