Results 81 to 90 of about 796,323 (348)

Thermodynamics of third order Lovelock anti-de Sitter black holes revisited

open access: yes, 2010
We compute the mass and the temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient ...
D. Birmingham   +7 more
core   +1 more source

Black hole thermodynamics [PDF]

open access: yesInternational Journal of Modern Physics D, 2014
The discovery in the early 1970s that black holes radiate as black bodies has radically affected our understanding of general relativity, and offered us some early hints about the nature of quantum gravity. In this paper, will review the discovery of black hole thermodynamics and summarize the many independent ways of obtaining the thermodynamic and ...
openaire   +4 more sources

Moulting Black Holes [PDF]

open access: yesJournal of High Energy Physics, 2012
Abstract We find a family of novel supersymmetric phases of the D1-D5 CFT, which in certain ranges of charges have more entropy than all known ensembles. We also find bulk BPS configurations that exist in the same range of parameters as these phases, and have more entropy than a BMPV black hole; they can be thought of as coming ...
Bena, I.   +4 more
openaire   +4 more sources

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

Stability of scalarized charged black holes in the Einstein–Maxwell–Scalar theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We analyze the stability of scalarized charged black holes in the Einstein–Maxwell–Scalar (EMS) theory with quadratic coupling. These black holes are labelled by the number of $$n=0,1,2,\ldots $$ n=0,1,2,… , where $$n=0$$ n=0 is called the fundamental ...
Yun Soo Myung, De-Cheng Zou
doaj   +1 more source

Non-asymptotically flat, non-AdS dilaton black holes

open access: yes, 2004
We show that previously known non-asymptotically flat static black hole solutions of Einstein-Maxwell-dilaton theory may be obtained as near-horizon limits of asymptotically flat black holes.
C. M. Chen   +22 more
core   +2 more sources

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

open access: yesAdvanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov   +4 more
wiley   +1 more source

Universal thermodynamic topological classes of black holes in a perfect fluid dark matter background

open access: yesEuropean Physical Journal C: Particles and Fields
In this paper, we study the universal thermodynamic topological classes of a family of black holes in a perfect fluid dark matter (PFDM) background.
Muhammad Rizwan   +2 more
doaj   +1 more source

Mass Functions of Supermassive Black Holes across Cosmic Time

open access: yesAdvances in Astronomy, 2012
The black hole mass function of supermassive black holes describes the evolution of the distribution of black hole mass. It is one of the primary empirical tools available for mapping the growth of supermassive black holes and for constraining ...
Brandon C. Kelly, Andrea Merloni
doaj   +1 more source

Accretion, Primordial Black Holes and Standard Cosmology

open access: yes, 2011
Primordial Black Holes evaporate due to Hawking radiation. We find that the evaporation time of primordial black holes increase when accretion of radiation is included.Thus depending on accretion efficiency more and more number of primordial black holes ...
A Barrau   +28 more
core   +1 more source

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