Search Results - "Jibril, Ben Achour"

Symmetries and conformal bridge in Schwarschild-(A)dS black hole mechanics by Achour, Jibril Ben, Livine, Etera R.

“…A bstract We show that the Schwarzschild-(A)dS black hole mechanics possesses a hidden symmetry under the three-dimensional Poincaré group. This symmetry shows…”
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Conformal structure of FLRW cosmology: spinorial representation and the so (2, 3) algebra of observables by Achour, Jibril Ben, Livine, Etera R.

“…A bstract It was recently shown that the homogeneous and isotropic cosmology of a massless scalar field coupled to general relativity exhibits a new hidden…”
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Hidden symmetry of the static response of black holes: applications to Love numbers by Achour, Jibril Ben, Livine, Etera R., Mukohyama, Shinji, Uzan, Jean-Philippe

“…A bstract We show that any static linear perturbations around Schwarzschild black holes enjoy a set of conserved charges which forms a centrally extended…”
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Cosmology as a CFT1 by Achour, Jibril Ben, Livine, Etera R.

“…A bstract We show that the simplest FLRW cosmological system consisting in the homo- geneous and isotropic massless Einstein-Scalar system enjoys a hidden…”
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Deformed General Relativity and Quantum Black Holes Interior by Arruga, Denis, Achour, Jibril Ben, Noui, Karim

“…Effective models of black holes interior have led to several proposals for regular black holes. In the so-called polymer models, based on effective…”
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Analytic continuation of black hole entropy in Loop Quantum Gravity by Jibril, Ben Achour, Mouchet, Amaury, Noui, Karim

“…A bstract We define the analytic continuation of the number of black hole microstates in Loop Quantum Gravity to complex values of the Barbero-Immirzi…”
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Analytic continuation of the rotating black hole state counting by Achour, Jibril Ben, Noui, Karim, Perez, Alejandro

“…A bstract In loop quantum gravity, a spherical black hole can be described in terms of a Chern-Simons theory on a punctured 2-sphere. The sphere represents the…”
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Conformal structure of FLRW cosmology: spinorial representation and the $$ \mathfrak{so} $$ (2, 3) algebra of observables by Achour, Jibril Ben, Livine, Etera R.

“…A bstract It was recently shown that the homogeneous and isotropic cosmology of a massless scalar field coupled to general relativity exhibits a new hidden…”
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Black holes as gases of punctures with a chemical potential: Bose-Einstein condensation and logarithmic corrections to the entropy by Asin, Olivier, Achour, Jibril Ben, Geiller, Marc, Noui, Karim, Perez, Alejandro

“…We study the thermodynamical properties of black holes when described as gases of indistinguishable punctures with a chemical potential. In this picture, which…”
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Schrödinger Symmetry in Gravitational Mini-Superspaces by Ben Achour, Jibril, Livine, Etera R., Oriti, Daniele, Piani, Goffredo

“…We prove that the simplest gravitational symmetry-reduced models describing cosmology and black hole mechanics are invariant under the Schrödinger group. We…”
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Proper time reparametrization in cosmology: Mobius symmetry and Kodama charges by Achour, Jibril Ben

“…It has been noticed that for a large class of cosmological models, the gauge fixing of the time-reparametrization invariance does not completely fix the clock…”
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Bouncing compact objects. Part II: Effective theory of a pulsating Planck star by Achour, Jibril Ben, Uzan, Jean-Philippe

“…Phys. Rev. D 102, 124041 (2020) This article presents an effective quantum extension of the seminal Oppenheimer-Snyder (OS) collapse in which the singularity…”
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The Cosmological Spinor by Achour, Jibril Ben, Livine, Etera R

“…Phys. Rev. D 101, 103523 (2020) We build upon previous investigation of the one-dimensional conformal symmetry of the Friedman-Lema\^ itre-Robertson-Walker…”
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Hairy black holes in DHOST theories: Exploring disformal transformation as a solution-generating method by Achour, Jibril Ben, Liu, Hongguang, Mukohyama, Shinji

“…Solutions-generating methods based on field redefinitions, such as conformal mapping, play an important role in investigating exact solutions in modified…”
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Disformal map and Petrov classification in modified gravity by Achour, Jibril Ben, De Felice, Antonio, Gorji, Mohammad Ali, Mukohyama, Shinji, Pookkillath, Masroor C

“…Disformal transformation provides a map relating different scalar-tensor and vector-tensor theories and gives access to a powerful solution-generating method…”
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On Rotating Black Holes in DHOST Theories by Achour, Jibril Ben, Liu, Hongguang, Motohashi, Hayato, Mukohyama, Shinji, Noui, Karim

“…Using the disformal solution-generating method, we construct new axisymmetric solutions in Degenerate Higher Order Scalar Tensor (DHOST) theories. The method…”
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Bouncing compact objects I: Quantum extension of the Oppenheimer-Snyder collapse by Achour, Jibril Ben, Brahma, Suddhasattwa, Uzan, Jean-Philippe

“…This article proposes a generalization of the Oppenheimer-Snyder model which describes a bouncing compact object. The corrections responsible for the bounce…”
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Covariance in self dual inhomogeneous models of effective quantum geometry: Spherical symmetry and Gowdy systems by Achour, Jibril Ben, Brahma, Suddhasattwa

“…Phys. Rev. D 97, 126003 (2018) When applying the techniques of Loop Quantum Gravity (LQG) to symmetry-reduced gravitational systems, one first regularizes the…”
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Polymer Schwarzschild black hole: An effective metric by Ben Achour, J., Lamy, F., Liu, H., Noui, K.

“…We consider the modified Einstein equations obtained in the framework of effective spherically symmetric polymer models inspired by loop quantum gravity. When…”
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The Thiemann Complexifier and the CVH algebra for Classical and Quantum FLRW Cosmology by Achour, Jibril Ben, Livine, Etera R

“…Phys. Rev. D 96, 066025 (2017) In the context of Loop Quantum Gravity (LQG), we study the fate of Thiemann complexifier in homogeneous and isotropic FRW…”
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