13 citations · 14 across the 4 of their papers we have counts for
7 papers · 1 filter
Stellar modeling within regularized 4D Einstein-Gauss-Bonnet gravity in light of current astrophysical constraints
G. Panotopoulos, Á. Rincón, I. Lopes
In this study we obtain interior solutions and investigate structural properties of isotropic compact stars in the framework of four-dimensional regularized Einstein-Gauss-Bonnet (…
Cosmological implications of Bumblebee theory on an FLRW background
Manuel Gonzalez-Espinoza, Grigorios Panotopoulos, Francisco Tello-Ortiz
We investigate some cosmological implications at background level of the Bumblebee model. The phase-space, the critical points and their stability are analyzed in detail applying w…
Compact Stars in Symmetric Teleparallel Scalar-Tensor Gravity
Grigorios Panotopoulos, Andrés Lueiza-Colipí, Nikolaos Dimakis +1
We investigate the existence of static, spherically symmetric compact objects within the framework of symmetric teleparallel scalar-tensor gravity. This theory extends the Brans-Di…
Radial oscillations and tidal Love numbers of dark energy stars
Grigoris Panotopoulos, Angel Rincon, Ilidio Lopes
We investigate the properties of relativistic stars made of dark energy. We model stellar structure assuming i) isotropic perfect fluid and ii) a dark energy inspired equation of s…
Quark stars with isotropic matter in Hořava gravity and Einstein-æther theory
Grigoris Panotopoulos, Daniele Vernieri, Ilídio Lopes
We study non-rotating and isotropic strange quark stars in Lorentz-violating theories of gravity, and in particular in Hořava gravity and Einstein-æther theory. For quark matter we…
Observational constraints on warm quasi-exponential inflation
Nelson Videla, Grigoris Panotopoulos
In the present work we study a warm inflationary model defined by a quasi-exponential inflaton potential and an inflaton decay rate proportional to the Hubble rate. The model is ch…