29 citations · 38 across the 15 of their papers we have counts for
10 papers · 1 filter
Exact black hole solutions with semi-symmetric vectorial torsion
Lehel Csillag, Tiberiu Harko
Semi-Symmetric metric gravity extends general relativity by introducing a semi-symmetric connection with vectorial torsion. The modified field equations contain extra contributions…
Gravitational radiation from binary systems with time varying masses
Teodora M. Matei, Cristian A. Croitoru, Tiberiu Harko
We consider the properties of the gravitational radiation emitted by massive stars in binary systems with time varying mass, orbiting around each other in Keplerian orbits under th…
Scale-invariant Schrödinger geometry in symmetric teleparallel gravity
Wei-Zhi Liu, Jing-Ying Wang, Shi-Dong Liang +3
We construct a locally scale-invariant formulation of Schrödinger geometry in symmetric teleparallel gravity. The unique scale transformation preserving autoparallelism, torsionles…
Constraining Early Dark Energy cosmological models with Big Bang Nucleosynthesis
Teodora M. Matei, Cristian Croitoru, Tiberiu Harko
The recent cosmological picture contains a significant tension indicating that our standard CDM picture may be incomplete. Early Dark Energy models can alleviate the Hubble tens…
Warm inflation in Weyl geometric gravity
Runhua Huang, Tiberiu Harko, Shi-Dong Liang +2
We investigate the warm inflationary scenario in the Weyl geometric gravity theory, in which the action is constructed by adding matter to the simplest conformally invariant gravit…
From dual connections to gravitational field equations -- the curvature and Einstein tensors of the - connection of a quasi-statistical manifold
Rattanasak Hama, Tiberiu Harko, Sorin V. Sabau
We present a detailed review of the mathematical foundations of the theory of the statistical and quasi-statistical manifolds, which recently have found many applications in genera…
Cosmological test of a length-preserving biconnection gravity
Dalale Mhamdi, Amine Bouali, Taoufik Ouali +1
We investigate the cosmological implications of an extended gravitational framework based on biconnection gravity, constructed from the Schrdinger connection and its dual…
Helicity-supported stationary spacetimes: A class of finite-energy, horizonless, axisymmetric solutions
Francisco S. N. Lobo, Tiberiu Harko
We construct a class of stationary, axisymmetric, horizonless spacetimes whose curvature is generated entirely by smooth, localised differential rotation , while the spatial…
Analytic semiclassical backreaction of a Schwarzschild black hole in a finite cavity: horizon shift, temperature renormalization, and canonical stability in the Hartle-Hawking State
G. G. L. Nashed, Alnadhief H. A. Alfedeel, Tiberiu Harko
We construct an analytic model of static semiclassical backreaction for a Schwarzschild black hole in the Hartle--Hawking state enclosed within a finite spherical cavity. Using a m…
Dark energy and accelerating cosmological evolution in a Universe with a Weylian boundary
Tiberiu Harko, Shahab Shahidi
We investigate the influence of boundary terms in gravitational field theories, by considering that in the Einstein-Hilbert action the boundary can be described by a non-metric Wey…