output
20112026
most citedA portrait of the Higgs boson by the CMS experiment ten years after the discovery

424 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing gr-qcShow all

13 papers · 1 filter

gr-qc2026

Quasi-isotropic Asymptotic Expansions in Varying Speed of Light Cosmologies

Dimitrios Trachilis

We generalize the quasi-isotropic solution of the Einstein equations near a cosmological initial singularity to models with a varying speed of light and/or a varying gravitational…

gr-qc2026★ 1 cited

Asymptotic analysis of varying light speed cosmologies

Dimitrios Trachilis

We investigate potential singularities in isotropic cosmological models featuring a time-varying speed of light and the gravitational constant. The governing field equations genera…

gr-qc2025★ 5 cited

Study of Complexity Factor and Stability of Dynamical Systems in Gravity

M. Zeeshan Gul, W. Ahmad, M. M. M. Nasir +3

In this paper, we evaluate the complexity of the non-static cylindrical geometry with anisotropic matter configuration in the framework of modified Gauss-Bonnet theory. In this per…

gr-qc2023★ 1 cited

Sudden Shock Waves in modified gravity

Ignatios Antoniadis, Spiros Cotsakis, Dimitrios Trachilis

We construct a generic asymptotic solution for modified gravity near a sudden singularity. This solution contains a fluid source with no equation of state and is function-counting…

gr-qc2020

The radiation instability in modified gravity

Spiros Cotsakis, Dimitrios Trachilis

We study the problem of the instability of inhomogeneous radiation universes in quadratic lagrangian theories of gravity written as a system of evolution equations with constraints…

gr-qc2020★ 34 cited

Bondi-Hoyle Accretion around the Non-rotating Black Hole in 4D Einstein-Gauss-Bonnet Gravity

Orhan Donmez

In this paper, the numerical investigation of a Bondi-Hoyle accretion around a non-rotating black hole in a novel four dimensional Einstein-Gauss-Bonnet gravity is investigated by…

gr-qc2020★ 6 cited

The Generic Sudden Singularity in Brans-Dicke Theory

John D. Barrow, Spiros Cotsakis, Dimitrios Trachilis

We construct a formal asymptotic series expansion for a general solution of the Brans-Dicke equations with a fluid source near a sudden singularity. This solution contains eleven i…

gr-qc2019★ 6 cited

Non-linear interactions in cosmologies with energy exchange

John D. Barrow, Georgia Kittou

We investigate the case of two interacting fluids in homogeneous and isotropic cosmologies with a non-linear interaction term. The interaction term avoids the unrealistic form gene…

gr-qc2019★ 2 cited

Cosmological wave maps

Spiros Cotsakis, John Miritzis, Koralia Tzanni

We consider theories of gravity that include many coupled scalar fields with arbitrary couplings, in the geometric framework of wave maps. We examine the possibility of obtaining a…

gr-qc2019★ 3 cited

Interacting vacuum at infinity

Georgia Kittou

We apply the central extension technique of Poincare to dynamics involving an interacting mixture of pressureless matter and vacuum near a finite-time singularity. We show that the…

gr-qc2018★ 7 cited

Is interacting vacuum viable?

Georgia Kittou

We study the asymptotic dynamics of dark energy as a mixture of pressureless matter and an interacting vacuum component. We find that the only dynamics compatible with current obse…

gr-qc2013★ 15 cited

Asymptotic vacua with higher derivatives

Spiros Cotsakis, Seifedine Kadry, Georgios Kolionis +1

We study limits of vacuum, isotropic universes in the full, effective, four-dimensional theory with higher derivatives. We show that all flat vacua as well as general curved ones a…

gr-qc2012★ 13 cited

The regular state in higher-order gravity

Spiros Cotsakis, Seifedine Kadry, Dimitrios Trachilis

We consider the higher-order gravity theory derived from the quadratic lagrangian in vacuum as a first-order (ADM-type) system with constraints, and build time development…