359 citations · 3k across the 73 of their papers we have counts for
74 papers
Jordan-like invariant representations of scalar-tensor gravity and the return of imperfect-fluid thermodynamics
David S. Pereira, José Pedro Mimoso
It has been shown that the thermodynamics of frame-invariant scalar-tensor gravity admits an Einstein-frame-like invariant representation, in which the scalar sector is minimally c…
A Buchdahl solution generator for Einstein-sigma gravity and multiscalar-tensor gravity
David S. Pereira, Francisco S. N. Lobo, José Pedro Mimoso
Buchdahl transformations provide a geometric route from vacuum spacetimes to scalar-field solutions. We formulate this mechanism as a target-covariant solution generator for Einste…
Differential Obstructions to Curvature-Dependent Conformal Transformations
David S. Pereira, Francisco S. N. Lobo, José Pedro Mimoso
Curvature-dependent conformal rules are local forward assignments on known metrics, but they are not generically local changes of metric variables. We study the nondegenerate class…
On the robustness of the angular homogeneity scale : a comparative analysis of computational approaches
Pedro Fanha, António da Silva, José Fonseca +2
The assumption of large-scale homogeneity is a cornerstone of modern cosmology and underlies the validity of the FLRW framework. Testing the scale at which the Universe transitions…
Gravitational baryogenesis beyond the spectator approximation
David S. Pereira, Beatriz A. Fernandes, José Pedro Mimoso
The standard gravitational-baryogenesis operator , with , is usually treated as a spectator interaction that generates an effective chemica…
Thermal channels of scalar and tensor waves in Jordan-frame scalar--tensor gravity
David S. Pereira, Francisco S. N Lobo, José Pedro Mimoso
We study first-order scalar and tensor perturbations of Jordan-frame scalar--tensor gravity about a spatially flat FLRW background using the Einstein-like effective-fluid decomposi…