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Related papers: The Penrose inequality and apparent horizons

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We establish a Penrose-Like Inequality for general (not necessarily time symmetric) initial data sets of the Einstein equations which satisfy the dominant energy condition. More precisely, it is shown that the ADM energy is bounded below by…

Differential Geometry · Mathematics 2013-10-14 Marcus A. Khuri

For asymptotically flat initial data of Einstein's equations satisfying an energy condition, we show that the Penrose inequality holds between the ADM mass and the area of an outermost apparent horizon, if the data are restricted suitably.…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Edward Malec , Marc Mars , Walter Simon

We establish a Penrose-like inequality for general (not necessarily time-symmetric) initial data sets of the Einstein-Maxwell equations, which satisfy the dominant energy condition. More precisely, it is shown that the ADM energy is bounded…

General Relativity and Quantum Cosmology · Physics 2015-06-16 Marcus A. Khuri

The classical Penrose inequality, a relation between the ADM mass and the area of any cross section of the black hole event horizon, was introduced as a test of the weak cosmic censorship conjecture: if it fails, the trapped surface is not…

General Relativity and Quantum Cosmology · Physics 2025-11-27 Eduardo Hafemann , Eleni-Alexandra Kontou

We prove the spacetime Penrose inequality for asymptotically flat $2(n+1)$-dimensional initial data sets for the Einstein equations, which are invariant under a cohomogeneity one action of $\mathrm{SU}(n+1)$. Analogous results are obtained…

Differential Geometry · Mathematics 2024-04-23 Marcus Khuri , Hari Kunduri

We summarize results on the Penrose inequality bounding the ADM-mass or the Bondi mass in terms of the area of an outermost apparent horizon for asymptotically flat initial data of Einstein's equations. We first recall the proof, due to…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Edward Malec , Marc Mars , Walter Simon

We formulate and prove the stability statement associated with the spacetime Penrose inequality for $n$-dimensional spherically symmetric, asymptotically flat initial data satisfying the dominant energy condition. We assume that the ADM…

General Relativity and Quantum Cosmology · Physics 2022-12-29 Emily Schaal

Of the various energy conditions which can be assumed when studying mathematical general relativity, intuitively the simplest is the weak energy condition $\mu\geq 0$ which simply states that the observed mass-energy density must be…

General Relativity and Quantum Cosmology · Physics 2025-07-14 Jaroslaw S. Jaracz

Our current picture of black hole gravitational collapse relies on two assumptions: i) the resulting singularity is hidden behind an event horizon -- weak cosmic censorship conjecture -- and ii) spacetime eventually settles down to a…

General Relativity and Quantum Cosmology · Physics 2009-11-13 J. L. Jaramillo , N. Vasset , M. Ansorg

For asymptotically flat spacetimes the Penrose inequality gives an initial data test for the weak cosmic censorship hypothesis. We give a formulation of this inequality for asymptotically anti-deSitter (AAdS) spacetimes, and show that the…

General Relativity and Quantum Cosmology · Physics 2017-12-06 Viqar Husain , Suprit Singh

We investigate axially symmetric asymptotically flat vacuum self-gravitating system. A class of initial data with apparent horizon was numerically constructed. The examined solutions satisfy the Penrose inequality. The prior analysis of a…

General Relativity and Quantum Cosmology · Physics 2010-04-06 Janusz Karkowski , Piotr Koc , Zdobyslaw Swierczynski

We give a holographic argument in favor of the AdS Penrose inequality, which conjectures a lower bound on the total mass in terms of the area of apparent horizons. This inequality is often viewed as a test of cosmic censorship. We further…

High Energy Physics - Theory · Physics 2019-06-19 Netta Engelhardt , Gary T. Horowitz

In general relativity, the Penrose inequality relates the mass and the entropy associated with a gravitational background. If the inequality is violated by an initial Cauchy data, it suggests a creation of a naked singularity, thus…

High Energy Physics - Theory · Physics 2015-05-28 Igor Itkin , Yaron Oz

In axially symmetric spacetimes the Penrose inequality can be strengthened to include angular momentum. We prove a version of this inequality for minimal surfaces, more precisely, a lower bound for the ADM mass in terms of the area of a…

General Relativity and Quantum Cosmology · Physics 2018-01-26 Pablo Anglada

The recent holographic deduction of Penrose inequality only assumes null energy condition while the weak or dominant energy condition is required in usual geometric proof. This paper makes a step toward filling up gap between these two…

High Energy Physics - Theory · Physics 2023-02-01 Zi-Qing Xiao , Run-Qiu Yang

Penrose's original heuristic for his eponymous spacetime inequality -- a conjectured lower bound on the ADM mass in terms of the area of a horizon cross-section -- relies on the black hole final state conjecture. In this paper we isolate a…

General Relativity and Quantum Cosmology · Physics 2026-05-19 Ahmed Ellithy

The Penrose inequality has so far been proven in cases of spherical symmetry and in cases of zero extrinsic curvature. The next simplest case worth exploring would be non-spherical, non-rotating black holes with non-zero extrinsic…

General Relativity and Quantum Cosmology · Physics 2009-10-29 Benjamin K. Tippett

We demonstrate that the Penrose inequality is valid for spherically symmetric geometries even when the horizon is immersed in matter. The matter field need not be at rest. The only restriction is that the source satisfies the weak energy…

General Relativity and Quantum Cosmology · Physics 2009-10-22 Edward Malec , Niall Ó Murchadha

The classical Penrose inequality specifies a lower bound on the total mass in terms of the area of certain trapped surfaces. This fails at the semiclassical level. We conjecture a Quantum Penrose Inequality: the mass at spatial infinity is…

High Energy Physics - Theory · Physics 2019-12-18 Raphael Bousso , Arvin Shahbazi-Moghaddam , Marija Tomasevic

Formulation of the Penrose inequality becomes ambiguous when the past and future apparent horizons do cross. We test numerically several natural possibilities of stating the inequality in punctured and boosted single- and double- black…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Janusz Karkowski , Edward Malec
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