267 citations · 670 across the 28 of their papers we have counts for
10 papers · 1 filter
New insights on null and timelike warped symmetric spacetime splittings
Alan Maciel, Morgan Le Delliou, José P. Mimoso
We explore in detail the 2+2 and 1+1+2 formalism in spherically symmetric spacetimes, spanning from deducing the dynamical equations to relating them to the well-known generalised…
Advanced General Relativity Notes
M. Le Delliou
These lecture notes are intended as a guide to Graduate level readers that are already familiar with basic General Relativity. They present in a concise way some advanced concepts…
Solution to the hyperon puzzle using dark matter
Antonino Del Popolo, Maksym Deliyergiyev, Morgan Le Delliou
In this paper, we studied the ``hyperon puzzle", a problem that nevertheless the large number of studies is still an open problem. The solution of this issue requires one or more m…
A dual null formalism for the collapse of fluids in a cosmological background
Alan Maciel, Morgan Le Delliou, José P. Mimoso
In this work we revisit the definition of Matter Trapping Surfaces (MTS) introduced in previous investigations and show how it can be expressed in the so-called dual null formalism…
Separating expansion and collapse in general fluid models with heat flux
Morgan Le Delliou, José Pedro Mimoso, Filipe C. Mena +3
In this paper we consider spherically symmetric general fluids with heat flux, motivated by causal thermodynamics, and give the appropriate set of conditions that define separating…
Local conditions separating expansion from collapse in spherically symmetric models with anisotropic pressures
José P. Mimoso, Morgan Le Delliou, Filipe C. Mena
We investigate spherically symmetric spacetimes with an anisotropic fluid and discuss the existence and stability of a dividing shell separating expanding and collapsing regions. W…
Separating expansion from contraction: generalized TOV condition, LTB models with pressure and CDM
Morgan Le Delliou, Filipe C. Mena, José Pedro Mimoso
We discuss the existence of a dividing shell separating expanding and collapsing regions in spherically symmetric solutions with pressure. We obtain gauge invariant conditions rela…
Separating expansion from contraction in spherically symmetric models with a perfect-fluid: Generalization of the Tolman-Oppenheimer-Volkoff condition and application to models with a cosmological constant
José Pedro Mimoso, Morgan Le Delliou, Filipe C. Mena
We investigate spherically symmetric perfect-fluid spacetimes and discuss the existence and stability of a dividing shell separating expanding and collapsing regions. We perform a…
Separating expansion from contraction and generalizing TOV condition in spherically symmetric models with pressure
Morgan Le Delliou, José Pedro Mimoso
We investigate spherically symmetric solutions with pressure and discuss the existence of a dividing shell separating expanding and collapsing regions. We perform a 3+1 splitting a…
Probing Dynamical Dark Energy with Press-Schechter Mass Functions
Morgan Le Delliou
Measurement of accelerated expansion in the Universe led to propose a new cosmic fluid as its cause: dark energy. Its various incarnations offer a wealth of models whose relevance…