Results 81 to 90 of about 707,832 (374)
Entropy of singularities in self-gravitating radiation [PDF]
Classical and Quantum Gravity, 2011 28 pages, 9 figures. Revised version with additional comments and references, and a section on physical interpretation.
Ntina Savvidou, Charis Anastopoulos
openaire +3 more sources
The late-time singularity inside non-spherical black holes
, 1998 It was long believed that the singularity inside a realistic, rotating black hole must be spacelike. However, studies of the internal geometry of black holes indicate a more complicated structure is typical. While it seems likely that an observer falling
A. Bonanno +39 more
core +1 more source
Nanodiamond‐Infused Microgels for pH‐Tunable Rheology, Lubrication, and UV Protection
Advanced Functional Materials, EarlyView.Microgels consisting of swollen polyacrylic acid polymer networks, impregnated with nanodiamonds provide protection from ultraviolet (UV) radiation harmful to human health. Nanodiamonds enable UV blockage and control of the rheology (flow) and lubrication (skin‐feel) of these microgel‐skincare‐mimics.
Pallav K. Jani +10 more
wiley +1 more source
From black holes to white holes: a quantum gravitational, symmetric bounce [PDF]
, 2017 Recently, a consistent non-perturbative quantization of the Schwarzschild interior resulting in a bounce from black hole to white hole geometry has been obtained by loop quantizing the Kantowski–Sachs vacuum spacetime.
J. Olmedo, Sahil Saini, Parampreet Singh
semanticscholar +1 more source
Challenging the paradigm of singularity excision in gravitational collapse. [PDF]
Physical Review Letters, 2006 A paradigm deeply rooted in modern numerical relativity calculations prescribes the removal of those regions of the computational domain where a physical singularity may develop. We here challenge this paradigm by performing three-dimensional simulations
L. Baiotti, L. Rezzolla
semanticscholar +1 more source
A Universal Way to Manipulate Droplet via Light‐Fueled Thermocapillary Convection
Advanced Functional Materials, EarlyView.A non‐contact light‐induced droplet manipulation strategy fueled by mid‐infrared (MIR) light irradiation is introduced. No additional additives and/or complex substrate are required. Here, thermocapillary convection, directly generated by temperature gradient at outer surface of droplet via localized surface heating, plays a key role to propel the ...
Hyesun Hwang +5 more
wiley +1 more source
Gravitational dipole moment from an exact solution with torsion
New Journal of Physics, 2020 Dipole fields are common in electromagnetism and may be viewed as the result of a positive and negative charge (or pole) which are close together. A dipole field in gravity is not expected to exist because negative mass has never been observed.
R T Hammond
doaj +1 more source
Charged radiation collapse in Einstein–Gauss–Bonnet gravity
European Physical Journal C: Particles and Fields, 2022 We generalise the continual gravitational collapse of a spherically symmetric radiation shell of matter in five dimensional Einstein–Gauss–Bonnet gravity to include the electromagnetic field.
Byron P. Brassel +2 more
doaj +1 more source
Naked Singularities in Spherically Symmetric Inhomogeneous Tolman-Bondi Dust Cloud Collapse [PDF]
, 1993 We investigate the occurrence and nature of naked singularity for the inhomogeneous gravitational collapse of Tolman-Bondi dust clouds.It is shown that the naked singularities form at the center of the collapsing cloud in a wide class of collapse models ...
A. Ori +42 more
core +2 more sources
Advanced Functional Materials, EarlyView.This work presents a soft microelectrode array based on vertically aligned carbon nanotube (CNT) forests, combining high conductivity with mechanical softness. A densification process and air‐pressure‐assisted flexibilization improve structural integrity, ensuring stable insertion and reduced inflammation.
Hyeonhee Roh +8 more
wiley +1 more source