40 citations · 234 across the 23 of their papers we have counts for
25 papers
Charged regular AdS black holes in a scalar-vector-tensor theory coupled to Born-Infeld electrodynamics
Gokhan Alkac
We construct exact, static, circularly symmetric charged regular AdS black hole solutions in a three-dimensional scalar-vector-tensor theory obtained from regularized Gauss-Bon…
3d Lovelock gravity and the holographic c-theorem: Proof at all orders and resummation
Gokhan Alkac, Luis Guajardo, Hikmet Ozsahin
We prove that 3d Lovelock gravity, the Horndeski theory obtained from the regularized Lovelock invariants in three dimensions, admits a holographic c-theorem at all orders and for…
The Smarr Formula is Gauss's Law: A Kerr-Schild Single-Copy Perspective
Gokhan Alkac
In the Kerr-Schild double copy, static and spherically symmetric black hole solutions of general relativity are mapped to purely electric solutions of Maxwell's theory in flat spac…
Weyl double copy in Lifshitz spacetimes
Gokhan Alkac, Mehmet Kemal Gumus, Mehmet Ali Olpak
Lifshitz black hole solutions pose particular challenges for reconciling the two main formulations of the classical double copy: the Kerr-Schild double copy and the Weyl double cop…
Regular AdS black holes from regularized Gauss-Bonnet coupling
Gokhan Alkac, Murat Mesta, Gonul Unal
We obtain a three-dimensional bi-vector-tensor theory of the generalized Proca class by regularizing the Gauss-Bonnet invariant within the Weyl geometry. We show that the theory ad…
AdS black holes with primary Proca hair from a regularized Gauss-Bonnet coupling
Gokhan Alkac, Murat Mesta, Gonul Unal
We construct a consistent three-dimensional Einstein-Gauss-Bonnet theory as a vector-tensor theory within the generalized Proca class by employing a regularization procedure based…
On the consistency of non-commutative geometry inspired Reissner-Nordström black hole solution
Gokhan Alkac, Murat Mesta, Gonul Unal
We revisit the non-commutative geometry inspired Reissner-Nordström black hole solution obtained by smearing the point sources with a Gaussian distribution. We show that while the…
Simulating Hawking radiation in quantum many-body systems: deviations from the thermal spectrum
Gokhan Alkac, Ege Özgün
We investigate a recently proposed one-to-one correspondence between quantum field theories in two-dimensional curved spacetime and quantum many-body systems, which enables the sim…
Microscopic entropy of static black holes in 3d Lovelock gravities
Gokhan Alkac, Luis Guajardo, Hikmet Ozsahin
We give a microscopic derivation of the semi-classical entropy of static black holes in 3d Lovelock gravities, which are certain 3d Horndeski theories that were recently discovered…
Classical double copy in the black hole mini-superspace
Gokhan Alkac, Mehmet Kemal Gumus, Mehmet Ali Olpak
We give a novel formulation of classical double copy in the mini-superspace of static, spherically symmetric black holes where the map between the solutions of general relativity a…
Regularized Weyl double copy
Gokhan Alkac, Mehmet Kemal Gumus, Oguzhan Kasikci +2
We propose a regularization procedure in the sourced Weyl double copy, a spinorial version of the classical double copy, such that it matches much more general results in the Kerr-…
Scaling symmetry, Smarr relation, and the extended first law in lower-dimensional Lovelock gravity
Gokhan Alkac, Gokcen Deniz Ozen, Hikmet Ozsahin +2
Recently, it was discovered that lower-dimensional versions of Lovelock gravity exist as scalar-tensor theories that are examples of Horndeski gravity. We study the thermodynamics…
3D Lovelock Gravity and the Holographic c-Theorem
Gokhan Alkac, Gun Suer
We show that the scalar-tensor theory that arises in a rigorous limit of Lovelock gravity up to cubic order admits a holographic c-theorem and verify that the value of th…
Generalized Black Holes in 3D Kerr-Schild Double Copy
Gokhan Alkac, Mehmet Kemal Gumus, Mehmet Ali Olpak
The double copy of the Coulomb solution in three dimensions is a non-vacuum solution that can be obtained through different matter couplings. It is the static black hole solution o…
Lower-dimensional Limits of Cubic Lovelock Gravity
Gokhan Alkac, Gokcen Deniz Ozen, Gun Suer
In this paper, we obtain the lower-dimensional limits of cubic Lovelock gravity through a regularized Kaluza-Klein reduction. By taking a flat internal space for si…
Brief Note on Thurston Geometries in 3D Quadratic Curvature Theories
Gokhan Alkac, Deniz Olgu Devecioglu
We show that Thurston geometries are solutions to a large class of 3D quadratic curvature theories, where New Massive Gravity, which was studied in arXiv:2104.00754, is a special c…
Kerr-Schild Double Copy of the Coulomb Solution in Three Dimensions
Gokhan Alkac, Mehmet Kemal Gumus, Mehmet Ali Olpak
While the Kerr-Schild double copy of the Coulomb solution in dimensions higher than three is the Schwarzschild black hole, it is known that it should be a non-vacuum solution in th…
The Kerr-Schild Double Copy in Lifshitz Spacetime
Gokhan Alkac, Mehmet Kemal Gumus, Mustafa Tek
The Kerr-Schild double copy is a map between exact solutions of general relativity and Maxwell's theory, where the nonlinear nature of general relativity is circumvented by conside…
More on the Classical Double Copy in Three Spacetime Dimensions
Mehmet Kemal Gumus, Gokhan Alkac
It is well-known that General Relativity (GR) in three spacetime dimensions (3D) has no well-defined Newtonian limit. Recently, a static solution mimicking the behaviour of the exp…
Three Dimensional Modified Gravities as Holographic Limits of Lancsoz-Lovelock Theories
Gokhan Alkac, Deniz Olgu Devecioglu
We define a "holographic limit" of Lancsoz-Lovelock theories at the Lagrangian level which gives three-dimensional modified gravity theories. We also show that this limit applies t…
Holographic c-theorem and Born-Infeld Gravity Theories
Gokhan Alkac, Bayram Tekin
The requirement of the existence of a holographic c-function for higher derivative theories is a very restrictive one and hence most theories do not possess this property. Here, we…
Asymptotically flat black holes in 2+1 dimensions
Gokhan Alkac, Ercan Kilicarslan, Bayram Tekin
Asymptotically flat black holes in dimensions are a rarity. We study the recently found black flower solutions (asymptotically flat black holes with deformed horizons), stati…
Supersymmetric Backgrounds and Black Holes in Cosmological New Massive Supergravity
Gokhan Alkac, Luca Basanisi, Eric A. Bergshoeff +2
Using an off-shell Killing spinor analysis we perform a systematic investigation of the supersymmetric background and black hole solutions of the Cosmological New…
Massive N=2 Supergravity in Three Dimensions
Gokhan Alkac, Luca Basanisi, Eric A. Bergshoeff +2
There exists two distinct off-shell supergravities in three dimensions. They are also referred to as and supergravitie…