260 citations · 6.2k across the 131 of their papers we have counts for
121 papers · 1 filter
Dressing a naked singularity with zero-point length
Kimet Jusufi, Francisco S. N. Lobo
We regularize the central density cusp of the Joshi--Malafarina--Narayan spacetime using a normalized kernel motivated by a zero-point length. For an unbounded cusp, the convolutio…
Planck-scale black hole remnants inside neutron stars
Kimet Jusufi, Francisco S. N. Lobo
We examine a Planck-scale regular black-hole remnant in neutron-star matter using a T-duality-inspired effective geometry and explicitly separate geometrical results from assumptio…
Quantum-gravity-inspired Alcubierre warp-drive geometries
Kimet Jusufi, Francisco S. N. Lobo
String T-duality, through its correspondence with path-integral duality, endows the low-energy propagator with a zero-point length that softens the short-distance…
Reconstructing gravity from generalized entropies: exact Lagrangians
Ankit Anand, Sahil Devdutt, Kimet Jusufi +2
Generalized horizon entropies are widely used as theoretical modifications of the Bekenstein-Hawking area law, but through the Wald construction they may also encode modifications…
From arithmetic spectra to a quantum-corrected black hole geometry
Kimet Jusufi, Ankit Anand
The Euler product of the Riemann zeta function is the partition function of a free bosonic gas whose mode energies are the logarithms of the primes. We show that this arithmetic ga…
Entropy-geometry correspondence as effective nonlocal gravity
Kimet Jusufi, Ankit Anand
We develop an operator formulation of the entropy-geometry correspondence for static, spherically symmetric gravity. Starting from a generalized entropy, we reconstruct an effectiv…
A regularized photon-pair geometry motivated by the ER=EPR conjecture
Kimet Jusufi, Francisco S. N. Lobo, Douglas Singleton
We regularize the Aichelburg-Sexl shock-wave geometry for massless particles by smearing the point-like source over a string-inspired length scale . A radial extension of the…
Unified dark sector and Hubble-tension alleviation in scalar-vector-tensor gravity
Kimet Jusufi, Amir A. Khodahami, Ahmad Sheykhi +2
We investigate a scalar-vector-tensor theory in which matter is minimally coupled to a Jordan-frame metric , while a massive vector sector interacts with…
Zero-point length as a topological protection of black hole regularity
Ankit Anand, Kimet Jusufi, Cosimo Bambi
We investigate the thermodynamic topology of regular black holes with zero-point length using an extended first law that includes the zero-point length stored in the geometry. By t…
Topological and optical signatures of modified black-hole entropies
Ankit Anand, Kimet Jusufi, Spyros Basilakos +1
We investigate how deviations from the Bekenstein-Hawking entropy modify black-hole spacetimes through the recently proposed entropy-geometry correspondence. For four representativ…
Emergence of ER=EPR from non-local gravitational energy
Kimet Jusufi, Francisco S. N. Lobo, Emmanuel N. Saridakis +1
We construct a class of wormhole geometries supported by the non-local gravitational self-energy that regularizes the particle and black-hole sectors of spacetime. Using this frame…
Spontaneous wave function collapse from non-local gravitational self-energy
Kimet Jusufi, Douglas Singleton, Francisco S. N. Lobo
We incorporate non-local gravitational self-energy, motivated by string-inspired T-duality, into the Schrödinger-Newton equation. In this framework spacetime has an intrinsic non-l…
Effective matter sectors from modified entropies
Ankit Anand, Sahil Devdutt, Kimet Jusufi +1
We present a general formalism linking modified entropy functions directly to a modified spacetime metric and, subsequently, to an effective matter sector of entropic origin. In pa…
Regular black holes with gravitational self-energy as dark matter
Kimet Jusufi, Douglas Singleton
We incorporate the effect of non-local gravitational self-energy to obtain a neutral, non-singular spacetime geometry. This is achieved by using a non-local gravitational theory in…
Circular orbits and accretion disk around a deformed-Schwarzschild black hole in loop quantum gravity
Kourosh Nozari, Sara Saghafi, Milad Hajebrahimi +1
In this paper, we study the motion of neutral and electrically charged particles in the vicinity of a deformed-Schwarzschild black hole inspired by Loop Quantum Gravity (LQG). To e…
Black holes surrounded by massive vector fields in Kaluza-Klein gravity
Kimet Jusufi, Ankit Anand, Sara Saghafi +2
We present an exact black hole solution surrounded by massive vector fields predicted by Kaluza-Klein (KK) gravity. KK gravity in four dimensions (4D) is of particular interest, as…
Signatures of modified gravity from the gravitational Aharonov-Bohm effect
Kimet Jusufi, Abdelrahman Yasser, Emmanuele Battista +1
To date, no observational confirmation of dark matter particles has been found. In this paper, we put forward an alternative approach to inferring evidence for dark matter through…
Dark Universe inspired by the Kaluza-Klein gravity and impact on Primordial Gravitational Waves
Kimet Jusufi, Giuseppe Gaetano Luciano, Ahmad Sheykhi +1
We explore the potential implications of Kaluza-Klein (KK) gravity in unifying the dark sector of the Universe. Through dimensional reduction in KK gravity, the 5D spacetime framew…
Exploring a novel Einstein--Rosen BTZ wormhole
Ankit Anand, Kimet Jusufi, Mendrit Latifi
We introduce a novel Einstein-Rosen BTZ wormhole metric as a solution to the Einstein field equations with a negative cosmological constant and explore in detail its various phenom…
Thermodynamical properties of nonsingular universe
Ahmad Sheykhi, Leila Liravi, Kimet Jusufi
We disclose the thermodynamical properties of the apparent horizon in a nonsingular universe. We take into account the zero-point length correction to the gravitational potential a…
Effect of magnetized plasma on shadow and gravitational lensing of a Reissner-Nordström black hole
Yovqochev Pahlavon, Farruh Atamurotov, Kimet Jusufi +2
We explore the influence of the axion-plasmon on the optical properties of the charged black hole and show how the axion-plasmon coupling modifies the motion of photons around the…
Modified gravity/entropic gravity correspondence due to graviton mass
Kimet Jusufi, Ahmed Farag Ali, Abdelrahman Yasser +2
Some time ago, it has been suggested that gravitons can acquire mass in the process of spontaneous symmetry breaking of diffeomorphisms through the condensation of scalar fields [C…
Graviton mass due to dark energy as a superconducting medium: theoretical and phenomenological aspects
Nader Inan, Ahmed Farag Ali, Kimet Jusufi +1
It is well known that the cosmological constant term in the Einstein field equations can be interpreted as a stress tensor for dark energy. This stress tensor is formally analogous…
Apparent Dark Matter Inspired by Einstein Equation of State
Kimet Jusufi, Ahmad Sheykhi
The purpose of this article is twofold. First, by means of Padmanabhan's proposal on the emergence nature of gravity, we recover the CDM model and the effect of the dark matter…