175 citations
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12 papers · 1 filter
Topological and optical signatures of modified black-hole entropies
Ankit Anand, Kimet Jusufi, Spyros Basilakos +1
We investigate how deviations from the Bekenstein-Hawking entropy modify black-hole spacetimes through the recently proposed entropy-geometry correspondence. For four representativ…
Equivalence of cosmology with quintom-like scenario: the phantom field as effective realization of the non-trivial connection
Spyros Basilakos, Andronikos Paliathanasis, Emmanuel N. Saridakis
We show that cosmology with a non-trivial connection, namely the Connection II of the literature, is dynamically equivalent with a quintom-like model. In particular, we show…
Alleviating both and tensions in Tsallis cosmology
Spyros Basilakos, Andreas Lymperis, Maria Petronikolou +1
We present how Tsallis cosmology can alleviate both and tensions simultaneously. Such a modified cosmological scenario is obtained by the application of the gravity-the…
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…
Modified gravity and cosmology with nonminimal (derivative) coupling between matter and the Einstein tensor
Petros Asimakis, Spyros Basilakos, Andreas Lymperis +2
We construct new classes of modified theories in which the matter sector couples with the Einstein tensor, namely we consider direct couplings of the latter to the energy-momentum…
Big Bang Nucleosynthesis constraints on gravity
Petros Asimakis, Emmanuel N. Saridakis, Spyros Basilakos +1
We confront gravity, with Big Bang Nucleosynthesis (BBN) requirements. The former is obtained using both the torsion scalar, as well as the teleparallel equivalent of th…