7 citations · 41 across the 25 of their papers we have counts for
26 papers
Redshift Suppression of Nonlinear Scalar Fields in Accelerating FLRW Spacetimes
Mirda Prisma Wijayanto, Emir Syahreza Fadhilla, Ryan Sugihakim +3
We study small--data solutions of a nonlinear scalar field equation on spatially flat --dimensional FLRW spacetimes (). In conformal time the field satisfies a damped…
Deep Neural Networks for Heavy Lepton-Flavor-Violating Higgs Searches at the LHC
Akmal Ferdiyan, Reinard Primulando, Fiki Taufik Akbar +1
We study lepton-flavor-violating (LFV) decays of a heavy Higgs boson, , in the Type-III two-Higgs-doublet model by recasting the CMS search at TeV with 35…
Radiative Maxwell Scattering on Slowly Rotating Weakly Charged Kerr-Newman Black Holes
Bobby Eka Gunara, Mulyanto, Emir Syahreza Fadhilla +1
We study real source-free Maxwell fields on slowly rotating, weakly charged Kerr-Newman exteriors and set up a finite-energy scattering theory after removal of the stationary Coulo…
Coulomb Sectors and Scattering for Maxwell-Higgs Fields on Schwarzschild and Slowly Rotating Kerr Backgrounds
Bobby Eka Gunara, Mulyanto, Fiki Taufik Akbar
We develop a small-data Maxwell--Higgs theory on Schwarzschild and slowly rotating Kerr black-hole exteriors for gauge-invariant nonnegative self-interactions near the trivial vacu…
The Global Existence and Uniqueness of Maxwell-Chern-Simons-Higgs Equation in (2+1) Dimensions
Mulyanto, Ardian N. Atmaja, Fiki T. Akbar +1
In this paper, we show the global existence and uniqueness of classical solutions of the Maxwell-Chern-Simmons-Higgs system coupled to a neutral scalar with nontrivial scalar poten…
Uniform Energy Bound for Maxwell-Higgs Equations on Reissner-Nordström Spacetimes
Mulyanto, Ardian N. Atmaja, Fiki T. Akbar +1
In this paper, we prove the uniform energy bound for the Maxwell-Higgs system in the exterior region of Reissner-Nordström black holes. By employing an integrated local energy deca…
Isotropic and Anisotropic Radiating Gravastars with Various Matter Types of Thin Shell and Interior
Hasan Al-Asy'ari, Fiki Taufik Akbar, Bobby Eka Gunara
In this paper, we investigate models of radiating gravastars with both isotropic and anisotropic interiors, incorporating various types of thin shell matter. For the isotropic inte…
Classical Solutions of Higher Dimensional Einstein-Maxwell-Higgs System With Nontrivial Potential: Global Existence and Completeness
Mirda Prisma Wijayanto, Fiki Taufik Akbar, Bobby Eka Gunara
We study the Cauchy problem of higher dimensional Einstein-Maxwell-Higgs system in the framework of Bondi coordinates. As a first step, the problem is reduced to a single first-ord…
Gravitational Collapse in Higher-Dimensional Rastall Gravity with and without Cosmological Constant
Golfin Ekatria, Andy Octavian Latief, Fiki Taufik Akbar +1
We consider a spherically symmetric homogeneous perfect fluid undergoing a gravitational collapse to singularity in the framework of higher-dimensional Rastall gravity in the cases…
Decay Estimate of Maxwell-Higgs System on Schwarzschild Black Holes
Mulyanto, Fiki Taufik Akbar, Bobby Eka Gunara
In this paper, we prove the decay estimate of Maxwell-Higgs system on four dimensional Schwarzschild spacetimes. We show that if the field equations support a Morawetz type estimat…
Global Existence and Completeness of Classical Solutions in Higher Dimensional Einstein-Klein-Gordon System
Mirda Prisma Wijayanto, Fiki Taufik Akbar, Bobby Eka Gunara
In this paper we study the global existence and completeness of classical solutions of gravity coupled a scalar field system called Einstein-Klein-Gordon system in higher dimension…
Global existence of classical static solutions of four dimensional Einstein-Klein-Gordon system
Mirda Prisma Wijayanto, Emir Syahreza Fadhilla, Fiki Taufik Akbar +1
In this paper we prove the global existence of classical static solutions of Einstein gravitational theory coupled to a real scalar field where the spacetime admits spherically sym…
Snakes on Lieb lattice
R. Kusdiantara, F. T. Akbar, N. Nuraini +2
We consider the discrete Allen-Cahn equation with cubic and quintic nonlinearity on the Lieb lattice. We study localized nonlinear solutions of the system that have linear multista…
General Couplings of Four Dimensional Maxwell-Klein-Gordon System: Global Existence
Mulyanto, Fiki Taufik Akbar, Bobby Eka Gunara
In this paper, we consider the multi component fields interactions of the complex scalar fields and the electromagnetic fields (Maxwell-Klein-Gordon system) on four dimensional Min…
Static Spacetimes In Higher Dimensional Scalar-Torsion Theories With Non-Minimal Derivative Coupling
Bobby E. Gunara, Mulyanto, Rahmat H. Alineng +2
In this paper we consider a class of static spacetimes in higher dimensional () scalar-torsion theories with non-minimal derivative coupling and the scalar potential turne…
Justification of the discrete nonlinear Schrödinger equation from a parametrically driven damped nonlinear Klein-Gordon equation and numerical comparisons
Y. Muda, F. T. Akbar, R. Kusdiantara +2
We consider a damped, parametrically driven discrete nonlinear Klein-Gordon equation, that models coupled pendula and micromechanical arrays, among others. To study the equation, o…
Reduction of damped, driven Klein-Gordon equations into a discrete nonlinear Schrödinger equation: justification and numerical comparisons
Yuslenita Muda, Fiki T. Akbar, Rudy Kusdiantara +2
We consider a discrete nonlinear Klein-Gordon equations with damping and external drive. Using a small amplitude ansatz, one usually approximates the equation using a damped, drive…
Effective spacetime geometry of graviton condensates in gravity
Andy Octavian Latief, Fiki Taufik Akbar, Bobby Eka Gunara
We consider a model of Bose-Einstein condensate of weakly interacting off-shell gravitons in the regime that is far from the quantum critical point. Working in static spherically s…
Justification of the Lugiato-Lefever model from a damped driven equation
Fiki T. Akbar, Bobby E. Gunara, Hadi Susanto
The Lugiato-Lefever equation is a damped and driven version of the well-known nonlinear Schrödinger equation. It is a mathematical model describing complex phenomena in dissipative…
Static Black Holes in Higher Dimensional Einstein-Skyrme Models
Bobby E. Gunara, Fiki T. Akbar, Rizqi Fadli +2
In this paper we construct a class of hairy static black holes of higher dimensional Einstein-Skyrme theories with the cosmological constant whose scalar is an val…
Local and Global Existence of Solutions to Scalar Equations on Spatially Flat Universe as a Background with Non-minimal Coupling
Fiki T. Akbar, Bobby E. Gunara, Muhammad Iqbal +1
We prove the wellposedness of scalar wave equations on spatially flat universe as a background with nonminimal coupling with the scalar potential turned on by introducing the -o…
Black holes will break up solitons and white holes may destroy them
Fiki T. Akbar, Bobby E. Gunara, Hadi Susanto
We consider a quantum analogue of black holes and white holes using Bose-Einstein condensates. The model is described by the nonlinear Schrodinger equation with a 'stream flow' pot…
Higher Dimensional Curved Domain Walls on Kähler Surfaces
Fiki T. Akbar, Bobby E. Gunara, Flinn C. Radjabaycolle +1
In this paper we study some aspects of curved BPS-like domain walls in higher dimensional gravity theory coupled to scalars where the scalars span a complex Kähler surface with sca…
Existence of Static Dyonic Black Holes in Supergravity With Finite Energy
Fiki Taufik Akbar, Bobby Eka Gunara
We prove the existence and the uniqueness of the static dyonic black holes in four dimensional supergravity theory coupled vector and scalar multiplets. We set the near-horiz…