123 citations · 638 across the 16 of their papers we have counts for
17 papers
A Geometrical Model for the Evolution of Spherical Planetary Nebulae Based on Thin-Shell Formalism
S. Danial Forghani, Ibrahim Gullu, S. Habib Mazharimousavi
A spherical planetary nebula is described as a geometric model. The nebula itself is considered as a thin-shell which visualized as a boundary of two spacetimes. The inner and oute…
Black Holes in Double-Logarithmic Nonlinear Electrodynamics
Ibrahim Gullu, S. Habib Mazharimousavi
The electric and magnetic black hole solutions are found by coupling the recently introduced nonlinear electrodynamics (NED) model, called "double logharitmic nonlinear electrodyna…
Double-logarithmic nonlinear electrodynamics
Ibrahim Gullu, S. Habib Mazharimousavi
A new model of nonlinear electrodynamics named as \emph{"double-logarithmic"} is introduced and investigated. The theory carries one dimensionful parameter of the as Born-Infel…
Born-Infeld Gravity with a Unique Vacuum and a Massless Graviton
Ibrahim Gullu, Tahsin Cagri Sisman, Bayram Tekin
We construct an n-dimensional Born-Infeld type gravity theory that has the same properties as Einstein's gravity in terms of the vacuum and particle content: Namely, the theory has…
Born-Infeld Gravity with a Massless Graviton in Four Dimensions
Ibrahim Gullu, Tahsin Cagri Sisman, Bayram Tekin
We construct Born-Infeld (BI) type gravity theories which describe tree-level unitary (non-ghost and non-tachyonic) massless spin-2 modes around their maximally symmetric vacua in…
Spin-Spin Interactions in Massive Gravity and Higher Derivative Gravity Theories
Ibrahim Gullu, Bayram Tekin
We show that, in the weak field limit, at large separations, in sharp contrast to General Relativity (GR), all massive gravity theories predict distance-dependent spin alignments f…