299 citations · 469 across the 12 of their papers we have counts for
6 papers · 1 filter
Bohmian Quantum Cosmology from the Wheeler-DeWitt Equation
Spyros Basilakos, Gerasimos Kouniatalis, Emmanuel N. Saridakis +1
We construct a Bohmian quantum cosmological model for a spatially flat Friedmann Robertson Walker universe filled with a single scalar field whose potential provides a unified desc…
Gravitational wave signatures from reheating in Chern-Simons running-vacuum cosmology
Charalampos Tzerefos, Theodoros Papanikolaou, Spyros Basilakos +2
Within the context of a Chern-Simons running-vacuum-model (RVM) cosmology, one expects an early-matter dominated (eMD) reheating period after RVM inflation driven by the axion fiel…
Revisiting string-inspired running-vacuum models under the lens of light primordial black holes
Theodoros Papanikolaou, Charalampos Tzerefos, Spyros Basilakos +2
Light primordial black holes (PBHs) with masses can interestingly dominate the Universe's energy budget and give rise to early matter-dominated (eMD…
Dark energy from topology change induced by microscopic Gauss-Bonnet wormholes
Stylianos A. Tsilioukas, Emmanuel N. Saridakis, Charalampos Tzerefos
It is known that the appearance of microscopic objects with distinct topologies and different Euler characteristics, such as instatons and wormholes, at the spacetime-foam level in…
Scalar induced gravitational waves in modified teleparallel gravity theories
Charalampos Tzerefos, Theodoros Papanikolaou, Emmanuel N. Saridakis +1
Primordial black holes (PBHs) forming out of the collapse of enhanced cosmological perturbations provide access to the early Universe through their associated observational signatu…
No constraints for gravity from gravitational waves induced from primordial black hole fluctuations
Theodoros Papanikolaou, Charalampos Tzerefos, Spyros Basilakos +1
Primordial black hole (PBH) fluctuations can induce a stochastic gravitational wave background at second order, and since this procedure is sensitive to the underlying gravitationa…