78 citations · 213 across the 7 of their papers we have counts for
7 papers
Modified gravity with logarithmic curvature corrections and the structure of relativistic stars
Hamzeh Alavirad, Joel M. Weller
We consider the effect of a logarithmic f(R) theory, motivated by the form of the one-loop effective action arising from gluons in curved spacetime, on the structure of relativisti…
Fermion condensate from torsion in the reheating era after inflation
Joel M. Weller
The inclusion of Dirac fermions in Einstein-Cartan gravity leads to a four-fermion interaction mediated by non-propagating torsion, which can allow for the formation of a Bardeen-C…
Inflationary predictions in scalar-tensor DBI inflation
Joel M. Weller, Carsten van de Bruck, David F. Mota
The scalar-tensor Dirac-Born-Infeld (DBI) inflation scenario provides a simple mechanism to reduce the large values of the boost factor associated with single field models with DBI…
Embedding DBI inflation in scalar-tensor theory
Carsten van de Bruck, David F. Mota, Joel M. Weller
The Dirac-Born-Infeld (DBI) action has been widely studied as an interesting example of a model of k-inflation in which the sound speed of the cosmological perturbations differs fr…
A Quintom scenario with mixed kinetic terms
Emmanuel N. Saridakis, Joel M. Weller
We examine an extension of the quintom scenario of dark energy, in which a canonical scalar field and a phantom field are coupled through a kinetic interaction. We perform a phase…
Quintessence dynamics with two scalar fields and mixed kinetic terms
Carsten van de Bruck, Joel M. Weller
The dynamical properties of a model of dark energy in which two scalar fields are coupled by a non-canonical kinetic term are studied. We show that overall the addition of the coup…