A single real scalar field of spin zero obeying the Klein-Gordon equation in flat spacetime under external conditions is considered in the context of the spin-statistics connection. An imposed accelerated boundary on the ...
This work investigates an upper-limit of charge for a black hole in a nonlinear Newtonian theory of gravity. The charge is accumulated via protons fired isotropically at the black hole. This theoretical study of gravity ...
"Смотрите в программе:
Космические технологии: звездный датчик для ориентации в космосе;
Альтернативные технологии нефтедобычи;
Изучение свойств материалов с помощью лазера. В чем преимущество?"--
Johnson, W. L.; Kim, S. A.; Utegulov, Z. N.; Shaw, J. M.; Draine, B. T.(2009)
Distributions of electric fields in two-dimensional arrays of gold nanodisks on a Si3N4 membrane, with light incident through the membrane, are modeled with the aim of determining array geometries for effective plasmon-mediated ...
Utegulov, Z. N.; Mast, David B.; He, Peng; Shi, Donglu; Gilland, Robert F.(2005)
Functionalization of single-walled carbon nanotubes sSWNTsd by isotropic plasma treatment was studied using resonant Raman spectroscopy. It was shown that plasma-induced functionalization results in the uniaxial isotropic ...
Hurley, D. H.; Reese, S. J.; Park, S. K.; Utegulov, Z.N.; Kennedy, J. R.; Telschow, K. L.(2010)
In situ laser-based resonant ultrasound spectroscopy is used to characterize the development of a recrystallized microstructure in a high purity copper sample. The modal shapes, used for mode identification, of several ...
An approach is presented for calculating thermoelastic generation of ultrasound in a metal plate exposed to nanosecond pulsed laser heating, sufficient to cause melting but not ablation. Detailed consideration is given to ...
The general exact solution of the Einstein-matter field equations
describing spherically symmetric shells satisfying an equation of
state in closed form is discussed under general assumptions of physical
reasonableness. ...
We develop here a procedure to obtain regular static configurations as resulting from dynamical gravitational collapse of a massive matter cloud in general relativity. Under certain general physical assumptions for the ...
We study the complete gravitational collapse of a class of inhomogeneous perfect fluid models obtained by introducing small radial perturbations in an otherwise homogeneous matter cloud. The key feature that we assume for ...
The spin measurement of black holes has important implications in physics and astrophysics. Regardless of the specific technique to estimate the black hole spin, all the current approaches assume that the space-time geometry ...
We discuss a counterintuitive phenomenon of classical general relativity, in which a significant fraction of the radiation emitted by a collapsing object and detected by a distant observer may be blueshifted rather than ...
The nature of the super-massive black hole candidates in galactic nuclei can be tested by ana-lyzing the profile of the Ka iron line observed in their X-ray spectrum. In this paper, we consider the possibility that the ...
We study the homogeneous gravitational collapse of a spherical cloud of matter in a super-renormalizable and asymptotically free theory of gravity. We nd a picture that di ers substantially from the classical scenario. ...
We consider general relativistic homogeneous gravitational collapses for dust and radiation. We show that replacing the density profile with an effective density justified by some quantum gravity framework leads to the ...
We show that, in principle, a slowly evolving gravitationally collapsing perfect fluid cloud can asymptotically settle to a static spherically symmetric equilibrium configuration with a naked singularity at the center. We ...
We analyze here the final fate of complete gravitational collapse of a massless scalar field within general relativity. A class of dynamical solutions with initial data close to the Friedmann-Lemaˆıtre-Robertson-Walker ...
It is now known that when a massive star collapses under the force of its own gravity,
the final fate of such a continual gravitational collapse will be either a black hole or a
naked singularity under a wide variety of ...
In a previous paper, some of us studied general relativistic homogeneous gravitational collapses for dust and radiation, in which the density profile was replaced by an effective density justified by some quantum gravity ...