136 citations · 887 across the 29 of their papers we have counts for
5 papers · 1 filter
Solar system tests of scalar field models with an exponential potential
J. Paramos, O. Bertolami
We consider a scenario where a scalar field has dynamics ruled by an exponential potential, such as those arising from some quintessence type models, and aim at obtaining phenomeno…
Do f(R) theories matter?
O. Bertolami, J. Paramos
We consider a modified action functional with a non-minimum coupling between the scalar curvature and the matter Lagrangian, and study its consequences on stellar equilibrium. Part…
The Chaplygin dark star
O. Bertolami, J. Paramos
We study the general properties of a spherically symmetric body described through the generalized Chaplygin equation of state. We conclude that such object, dubbed generalized Chap…
Scalar Field Models: From the Pioneer Anomaly to Astrophysical Constraints
J. Paramos
In this work we study how scalar fields may affect solar observables, and use the constraint on the Sun's central temperature to extract bounds on the parameters of relevant models…
Astrophysical Constraints on Scalar Field Models
O. Bertolami, J. Paramos
We use stellar structure dynamics arguments to extract bounds on the relevant parameters of scalar field models: the putative scalar field mediator of a fifth force with a Yukawa p…