A wealth of astronomical data indicate the presence of mass discrepancies in the Universe.
The motions observed in a variety of classes of extragalactic systems exceed what can be …

This paper reviews the theory, phenomenology, and observational constraints on the
coupling parameters of Einstein-aether gravity, ie General Relativity coupled to a dynamical …

We study spherical black hole solutions in Einstein-aether theory, a Lorentz-violating
gravitational theory consisting of general relativity with a dynamical unit timelike vector (the …

Quantum key distribution (QKD) is a secure key generation method between two distant
parties by wisely exploiting properties of quantum mechanics. In QKD, experimental …

Lorentz symmetry and the notion of light cones play a central role in the definition of
horizons and the existence of black holes. Current observations provide strong indications …

In Einstein-aether theory, we study the stability of black holes against odd-parity
perturbations on a spherically symmetric and static background. For odd-parity modes, there …

We consider the accretion process in the thin disk around a supermassive black hole in
Einstein-aether-scalar theory. We probe the effects of the model parameter on the physical …

In this paper, we systematically study spherically symmetric static spacetimes in the
framework of Einstein-aether theory and pay particular attention to the existence of black …

We consider an Einstein-aether scalar field cosmological model where the aether and the
scalar field are interacting. The model of our consideration consists of the two different …

A gravity theory called scalar-tensor-vector gravity (STVG) has been recently developed and
succeeded in solar system, astrophysical, and cosmological scales without dark matter …