95 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
15 papers · 1 filter
Infinitesimally thin static scalar shells surrounding charged Gauss-Bonnet black holes
Shahar Hod
We reveal the existence of a new form of spontaneously scalarized black-hole configurations. In particular, it is proved that Reissner-Nordström black holes in the highly charged r…
Upper bound on the energies of the emitted Hawking quanta
Shahar Hod
Using Thorne's hoop conjecture, it is argued that the energies of the Hawking quanta emitted from canonical Schwarzschild black holes are bounded from above by the simple quantum r…
The holographic entropy bound in higher-dimensional spacetimes: As strong as ever
Shahar Hod
The celebrated holographic entropy bound asserts that, within the framework of a self-consistent quantum theory of gravity, the maximal entropy (information) content of a physical…
Viscosity bound versus the universal relaxation bound
Shahar Hod
For gauge theories with an Einstein gravity dual, the AdS/CFT correspondence predicts a universal value for the ratio of the shear viscosity to the entropy density, . The…
Charged reflecting stars supporting charged massive scalar field configurations
Shahar Hod
The recently published no-hair theorems of Hod, Bhattacharjee, and Sarkar have revealed the intriguing fact that horizonless compact reflecting stars {\it cannot} support spatially…
Ultra-spinning exotic compact objects supporting static massless scalar field configurations
Shahar Hod
Horizonless spacetimes describing highly compact exotic objects with reflecting (instead of absorbing) surfaces have recently attracted much attention from physicists and mathemati…
Onset of superradiant instabilities in rotating spacetimes of exotic compact objects
Shahar Hod
Exotic compact objects, horizonless spacetimes with reflective properties, have intriguingly been suggested by some quantum-gravity models as alternatives to classical black-hole s…
Spinning Kerr black holes with stationary massive scalar clouds: The large-coupling regime
Shahar Hod
We study analytically the Klein-Gordon wave equation for stationary massive scalar fields linearly coupled to spinning Kerr black holes. In particular, using the WKB approximation,…
A mystery of black-hole gravitational resonances
Shahar Hod
More than three decades ago, Detweiler provided an analytical formula for the gravitational resonant frequencies of rapidly-rotating Kerr black holes. In the present work we shall…
Universal charge-mass relation: From black holes to atomic nuclei
Shahar Hod
The cosmic censorship hypothesis, introduced by Penrose forty years ago, is one of the corner stones of general relativity. This conjecture asserts that spacetime singularities tha…
From Thermodynamics to the Bound on Viscosity
Shahar Hod
We show that the generalized second law of thermodynamics may shed much light on the mysterious Kovtun-Son-Starinets (KSS) bound on the ratio of viscosity to entropy density. In pa…
Einstein-Yang-Mills Solitons: The Role of Gravity
Shahar Hod
The canonical Bartnik-McKinnon solitons are regular solutions of the coupled Einstein-Yang-Mills system in which gravity may balance the repulsive nature of the Yang-Mills field. W…
Discrete Symmetries of Off-Shell Electromagnetism
Martin Land
We discuss the discrete symmetries of the Stueckelberg-Schrodinger relativistic quantum theory and its associated 5D local gauge theory, a dynamical description of particle/antipar…
Duality in Off-Shell Electromagnetism
Martin Land
In this paper, we examine the Dirac monopole in the framework of Off-Shell Electromagnetism, the five dimensional U(1) gauge theory associated with Stueckelberg-Schrodinger relativ…
Higher-Order Kinetic Term for Controlling Photon Mass in Off-Shell Electrodynamics
Martin Land
In a relativistic classical and quantum mechanics with Poincare-invariant parameter, particle worldlines are traced out by the evolution of spacetime events. In pre-Maxwell electro…