Abstract We revisit the Einstein-Gauss-Bonnet theory in view of the GW170817 event, which
compels that the gravitational wave speed is equal to c T 2= 1 in natural units. We use an …

In this work we shall study Einstein Gauss-Bonnet theories and we investigate when these
can have their gravitational wave speed equal to the speed of light, which is unity in natural …

We have explicitly demonstrated that scalar coupled Gauss-Bonnet gravity in four
dimensions can have nontrivial effects on the early inflationary stage of our Universe. In …

We study the dynamics of the field equations in a four-dimensional isotropic and
homogeneous spatially flat Friedmann-Lemaître-Robertson-Walker geometry in the context …

We consider inflationary models with the inflaton coupled to the Gauss-Bonnet term
assuming a special relation δ 1= 2 λ ε 1 between the two slow-roll parameters δ 1 and ε 1 …

We present the cosmological analysis of the Gauss-Bonnet quasi-dilaton massive gravity
theory. This offers a gravitational theory with a nonzero graviton mass. We calculate the …

Testing gravity theories is an important and interesting issue in relativistic astrophysics using
astrophysical observations. In recent years, Event horizon telescope collaboration provided …

Motivated by α-attractor models, in this paper we consider a Gauss-Bonnet inflation with an
E-model-type of potential. We consider the Gauss-Bonnet coupling function to be the same …

We investigate inflationary dynamics in the framework of the Einstein-Gauss-Bonnet gravity.
In the model under consideration, the inflaton field is nonminimally coupled to the Gauss …

The influence of non-minimal coupling of a scalar field and the Gauss–Bonnet term on the
inflationary stage of evolution of the universe is investigated in this paper. The main …