72 citations · 606 across the 59 of their papers we have counts for
26 papers · 1 filter
Near-extremal Kerr-like ECO in the Kerr/CFT Correspondence in Higher Spin Perturbations
M. Zhahir Djogama, Muhammad F. A. R. Sakti, Freddy P. Zen +1
The Kerr/CFT correspondence has been established to explore the quantum theory of gravity in the near-horizon geometry of a extreme Kerr black holes. The quantum gravitational corr…
Decoherence Induced by the Noise of Primordial Graviton with Minimum Uncertainty Initial States
Anom Trenggana, Freddy P. Zen, Getbogi Hikmawan
We have investigated the decoherence induced by the primordial graviton, using the influence functional method, to show whether this method is still effective in detecting graviton…
Chaos and fast scrambling delays of dyonic Kerr-Sen-AdS black hole and its ultra-spinning version
Hadyan Luthfan Prihadi, Freddy Permana Zen, Donny Dwiputra +1
The scrambling time and its delay are calculated using holography in an asymptotically AdS black hole solution of the gauged Einstein-Maxwell-Dilaton-Axion (EMDA) theory, the dyoni…
Rotating black holes and exotic compact objects in the Kerr/CFT correspondence within Rastall gravity
Muhammad Fitrah Alfian Rangga Sakti, Agus Suroso, Anto Sulaksono +1
Quantum gravitational effects on the near horizon may alter the black hole's horizon drastically to be partially reflective, portrayed by a quantum membrane. With this modification…
Fluctuations and non-Gaussianity in de Sitter spacetime from holographic entanglement entropy
Hadyan Luthfan Prihadi, Freddy Permana Zen, Donny Dwiputra
Using entanglement in dS/CFT correspondence, we show that a 4-dimensional de Sitter spacetime in the bulk fluctuates. We calculated the fluctuations of the entanglement entropy, wh…
CFT Duals on Rotating Charged Black Holes Surrounded by Quintessence
Muhammad Fitrah Alfian Rangga Sakti, Freddy Permana Zen
We demonstrate that Kerr/CFT duality can be extended to rotating charged black hole solution surrounded by quintessence in Rastall gravity. Since Rastall gravity can be considered…
Long-range correlation of CMB temperature fluctuations from the holographic entanglement entropy
Hadyan Luthfan Prihadi, Donny Dwiputra, Freddy Permana Zen
In this paper, we define the holographic multipartite entanglement entropy for separated subsystems living in a compact space-time. In a large limit, we find…
Kerr/CFT Correspondence on Kerr-Newman-NUT-Quintessence Black Hole
Muhammad Fitrah Alfian Rangga Sakti, Agus Suroso, Freddy Permana Zen
Rotating black hole solution surrounded by quintessential matter is recently discussed because it might be the promising solution to study the effect of dark energy in small scale…
CFT duals on extremal rotating NUT black hole
Muhammad Fitrah Alfian Rangga Sakti, Agus Suroso, Freddy Permana Zen
We investigate the Kerr-Newman-NUT black hole solution obtained from Plebański-Demiański solutions with several assumptions. The origin of the microscopic entropy of this black hol…
Near Horizon Extreme Magnetized Kerr Geometry
Muhammad F A R Sakti, Philin Y D Sagita, A Suroso +1
The conjectured magnetized Kerr/CFT correspondence states that the quantum theory of gravity in the near horizon of extreme Kerr black holes immersed by the magnetic field, Near Ho…
No-Go Theorem for Gauss-Bonnet Inflation without Inflaton Potential
Getbogi Hikmawan, Jiro Soda, Agus Suroso +1
Recently, an interesting inflationary scenario, named Gauss-Bonnet inflation, is proposed by Kanti et al.~\cite{Kanti:2015pda,Kanti:2015dra}. In the model, there is no inflaton pot…
Some Aspects of Spherical Symmetric Extremal Dyonic Black Holes in 4d N=1 Supergravity
Bobby E. Gunara, Freddy P. Zen, Fiki T. Akbar +2
In this paper we study several aspects of extremal spherical symmetric black hole solutions of four dimensional N=1 supergravity coupled to vector and chiral multiplets with the sc…
Kaluza-Klein two-brane-worlds cosmology at low energy
S. Feranie, Arianto, Freddy P. Zen
We study two -dimensional branes embedded in -dimensional spacetime. Using the gradient expansion approximation, we find that the effective theory is described by $(4…
Deformation of Dyonic Black Holes and Vacuum Geometries in Four Dimensional N=1 Supergravity
Bobby Eka Gunara, Freddy Permana Zen, Arianto
We study some aspects of spherical symmetric dyonic non-supersymmetric black holes in supergravity coupled to chiral and vector multiplets on Kähler-Ricci solitons. The…
Modified Gravitational Equations on Braneworld with Lorentz Invariant Violation
A. Arianto, Freddy P. Zen, Bobby E. Gunara
The modified gravitational equations to describe a four-dimensional braneworld in the case with the Lorentz invariant violation in a bulk spacetime is presented. It contains a trac…
N=1 Supergravity BPS Domain Walls on Kähler-Ricci Soliton
Bobby E. Gunara, Freddy P. Zen, Arianto
This paper provides a study of some aspects of flat and curved BPS domain walls together with their Lorentz invariant vacua of four dimensional chiral N=1 supergravity. The scalar…
Flat BPS Domain Walls on 2d Kähler-Ricci Soliton
Bobby Eka Gunara, Freddy Permana Zen
In this paper we address several aspects of flat Bogomolnyi-Prasad-Sommerfeld (BPS) domain walls together with their Lorentz invariant vacua of 4d N=1 supergravity coupled to a chi…
Tetrahedron Diagram and Perturbative Calculation in Chern-Simons-Witten Theory
Freddy P Zen, Jusak S Kosasih, Asep Y Wardaya +1
We investigate extended Wilson loop operators, in particular tetrahedron operator in (2 + 1)-dimensional Chern-Simons-Witten theory. This operator emerges naturally from the contri…
Cosmological evolution of interacting dark energy in Lorentz violation
Freddy P. Zen, Arianto, Bobby E. Gunara +2
The cosmological evolution of an interacting scalar field model in which the scalar field interacts with dark matter, radiation, and baryon via Lorentz violation is investigated. W…
Deformation of Curved BPS Domain Walls and Supersymmetric Flows on 2d Kähler-Ricci Soliton
Bobby E. Gunara, Freddy P. Zen
We consider some aspects of the curved BPS domain walls and their supersymmetric Lorentz invariant vacua of the four dimensional N=1 supergravity coupled to a chiral multiplet. In…
Attractor Solutions in Lorentz Violating Scalar-Vector-Tensor Theory
Arianto, Freddy P. Zen, Triyanta +1
We investigate properties of attractors for scalar field in the Lorentz violating scalar-vector-tensor theory of gravity. In this framework, both the effective coupling and potenti…
Kaehler-Ricci Flow, Morse Theory, and Vacuum Structure Deformation of N=1 Supersymmetry in Four Dimensions
Bobby E. Gunara, Freddy P. Zen
We address some aspects of four dimensional chiral N=1 supersymmetric theories on which the scalar manifold is described by Kähler geometry and can further be viewed as Kähler-Ricc…
BPS Domain Walls and Vacuum Structure of N=1 Supergravity Coupled to a Chiral Multiplet
Bobby E. Gunara, Freddy P. Zen, Arianto
We study BPS domain walls of N=1 supergravity coupled to a chiral multiplet and their Lorentz invariant vacua which can be viewed as critical points of BPS equations and the scalar…
The Low Energy Effective Equations of Motion for Multibrane World Gravity
F. P. Zen, Arianto, B. E. Gunara +1
The three 3-brane system with both positive or negative tension is studied in a low energy regime by using gradient expansion method. The effective equations of motion on the brane…