59 citations · 313 across the 19 of their papers we have counts for
21 papers
Where is the conformal coupling in Palatini gravity?
Alexandros Karam, Sotirios Karamitsos
We study the conformal coupling in the torsion-free Palatini formulation with an ordinary scalar kinetic term. Tuning the curvature coupling cannot restore Weyl invariance in a Pal…
Frame invariant diffusive formulation of scalar-tensor gravity
Laur Järv, Sotirios Karamitsos
Thermodynamics provides a useful interpretation of scalar-tensor gravity, in which the effective imperfect fluid admitted by the nonminimal coupling features a temperature that is…
From Frame Covariance to the Swampland Distance Conjecture
Sotirios Karamitsos, Benjamin Muntz
Field space geometry plays a central role within the Swampland Programme, most notably in the various Distance Conjectures. However, for gravitational EFTs, this geometry is not un…
Pole inflation from extended metric-affine gravity
Damianos Iosifidis, Sotirios Karamitsos
We study inflation in the framework of extended metric-affine F(R) gravity, where all even-parity quadratic invariants of torsion and non-metricity are included in the Lagrangian a…
Quasi-Palatini Formulation of Scalar-Tensor Gravity
Sotirios Karamitsos
The Palatini formulation has been successful in the development of several alternative theories of gravity. It is well understood that the Palatini and metric formulations are equi…
Global Portraits of Nonminimal Inflation: Metric and Palatini
Laur Järv, Sotirios Karamitsos, Margus Saal
In this paper, we study the global phase space dynamics of single nonminimally coupled scalar field inflation models in the metric and Palatini formalisms. Working in the Jordan fr…