402 citations · 2.3k across the 45 of their papers we have counts for
47 papers
IR quantum gravity solves naturally cosmic acceleration and its coincidence problem
Fotios K. Anagnostopoulos, Georgios Kofinas, Vasilios Zarikas
The novel idea is that the undergoing accelerated expansion of the universe happens due to infrared quantum gravity modifications at intermediate astrophysical scales of galaxies o…
Effective field equations and scale-dependent couplings in gravity
Alfio Bonanno, Georgios Kofinas, Vasilios Zarikas
A new set of field equations for a space-time dependent Newton's constant and cosmological constant in the presence of matter is presented. We prove that it represent…
Singularities and Phenomenological aspects of Asymptotic Safe Gravity
Vasilios Zarikas, Georgios Kofinas
Asymptotic Safety (AS) Program for quantum gravity keeps the same fields and symmetries with General Relativity and studies the associated gravitational action as a fundamental par…
Constraining the Asymptotically Safe Cosmology: cosmic acceleration without dark energy
Fotios K. Anagnostopoulos, Spyros Basilakos, Georgios Kofinas +1
A recently proposed Asymptotically Safe cosmology provides an elegant mechanism towards understanding the nature of dark energy and its associated cosmic coincidence problem. The u…
Is the use of Christoffel connection in gravity theories conceptually correct?
Georgios Kofinas
Christoffel connection did not enter gravity as an axiom of minimal length for the free fall of particles (where anyway length action is not defined for massless particles), nor ou…
A solution of the dark energy and its coincidence problem based on local antigravity sources without fine-tuning or new scales
Georgios Kofinas, Vasilios Zarikas
A novel idea is proposed for a natural solution of the dark energy and its cosmic coincidence problem. The existence of local antigravity sources, associated with astrophysical mat…