4 papers
Gravitational radiation from binary systems with time varying masses
Teodora M. Matei, Cristian A. Croitoru, Tiberiu Harko
We consider the properties of the gravitational radiation emitted by massive stars in binary systems with time varying mass, orbiting around each other in Keplerian orbits under th…
Constraining Early Dark Energy cosmological models with Big Bang Nucleosynthesis
Teodora M. Matei, Cristian Croitoru, Tiberiu Harko
The recent cosmological picture contains a significant tension indicating that our standard CDM picture may be incomplete. Early Dark Energy models can alleviate the Hubble ten…
Big Bang Nucleosynthesis constraints on space-time noncommutativity
Teodora Maria Matei, Cristian Croitoru, Tiberiu Harko
We consider the implications of the modified dispersion relations, due to the noncommutativity of the spacetime, for a photon gas filling the early Universe in the framework of the…
Big Bang Nucleosynthesis constraints on the cosmological evolution in a Universe with a Weylian Boundary
Teodora M. Matei, Cristian Croitoru, Tiberiu Harko
We investigate the effects that arise from the inclusion of Weylian boundary terms in the Einstein gravitational field equations in the Big Bang Nucleosynthesis (BBN) framework. Wi…