Over recent decades, the role of torsion in gravity has been extensively investigated along
the main direction of bringing gravity closer to its gauge formulation and incorporating spin …

We review different dark energy cosmologies. In particular, we present the Λ CDM
cosmology, Little Rip and Pseudo-Rip universes, the phantom and quintessence …

We review the holographic correspondence between field theories and string/M theory,
focusing on the relation between compactifications of string/M theory on Anti-de Sitter …

There is strong evidence that the area of any surface limits the information content of
adjacent spacetime regions, at 1.4× 10 69 bits per square meter. This article reviews the …

Abstract Models where dark matter and dark energy interact with each other have been
proposed to solve the coincidence problem. We review the motivations underlying the need …

We conjecture the following entropy bound to be valid in all space-times admitted by
Einstein's equation: let A be the area of any two-dimensional surface. Let L be a …

Applying the first law of thermodynamics to the apparent horizon of a Friedmann-Robertson-
Walker universe and assuming the geometric entropy given by a quarter of the apparent …

Recently, the Rényi and Tsallis generalized entropies have extensively been used in order
to study various cosmological and gravitational setups. Here, using a special type of …

We present a modified cosmological scenario that arises from the application of non-
extensive thermodynamics with varying exponent. We extract the modified Friedmann …

In this Letter we demonstrate that any interaction of pressureless dark matter with
holographic dark energy, whose infrared cutoff is set by the Hubble scale, implies a constant …