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Wyszukujesz frazę "Gamalath, K. A. I. L. W." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Simulation of Rotating Black Holes
Autorzy:
Vindana, W. M. H. P.
Wijewardena Gamalath, K. A. I. L.
Powiązania:
https://bibliotekanauki.pl/articles/1158501.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Hawking radiation
Hawking temperature
Kerr black hole
Kerr-Newman black hole
entropy
mass variation
rotating black holes
thermodynamic parameters
Opis:
Considering the analogy between classical thermodynamic parameters and black hole parameters, the four laws of thermodynamics are reinterpreted for Kerr and Kerr-Newman black holes. A simple model for the dynamic relationships was obtained by considering the surface area of the outer horizon of a Kerr and Kerr-Neumann black hole as the area of a perfect black body. Finding the conditions these black holes should satisfy, the equations were numerically solved and simulated for the Hawking temperature, Hawking radiation and entropy variations of Kerr and Kerr-Newman black holes. The Hawking temperature and Hawking radiation of a given rotating black hole drastically increases at the final stage of the black hole evaporation. In the meantime, the entropy of a rotating black hole drastically decreases through the time. The additional angular momentum and the charge effects gain high Hawking temperatures and high Hawking radiation values for the black holes while these effects reduce the entropy of the black holes.
Źródło:
World Scientific News; 2018, 114; 106-125
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of optical properties of Si photonic crystals
Autorzy:
Gamalath, K. A. I. L. W.
Settinayake, W. A. S. C.
Powiązania:
https://bibliotekanauki.pl/articles/412423.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
photonic crystal
waveguides
power divider
finite difference time domain method
yee lattice approach
Opis:
To investigate optical properties of Si photonic crystal waveguides, a mathematical model was set up. Finite difference time domain method was used to calculate the Maxwell’s equations numerically. For the evolution of the electromagnetic fields in the photonic crystals, simulations were done for a small lattices using Yee lattice approach. The properties of a waveguide and a power divider were investigated for 3λx 3λ photonic crystal formed from Si circular rods in air for telecommunication wavelength 1.55 μm. The model developed was satisfactory in predicting the behaviour of light in linear photonic crystals.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 19, 1; 87-98
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Probability densities of superconductors
Autorzy:
Gamalath, K. A. I. L. W.
Udeni, G. D. K. N.
Powiązania:
https://bibliotekanauki.pl/articles/411730.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Superconductors
Cooper pair
London theory
Ginzburg-Landau theory
BSC theory
current densities
momentum probability densities
Opis:
The energy, current density and momentum probability densities of superconductors were studied from London, Ginzburg-Landau and BSC theories by treating cooper pair as a particle moving in a magnetic field through analytical and numerical techniques. The London and GL solution were exactly the same at the classical limit for NbN. Considering a Cooper pair as a complete classical particle, the momentum probability density was derived by using the Maxwell velocity distribution and the quantum mechanical momentum probability density was derived by using the radial wave function of the cooper pairs for Zn. The quantum mechanical and classical momentum probability densities overlap at zero momentum.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2015, 41; 31-44
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planck scale potential associated with particles
Autorzy:
Bulathsinghala, D.L.
Gamalath, K.A.I.L.W.
Powiązania:
https://bibliotekanauki.pl/articles/412054.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Planck scale potential
mass-energy equivalence
charge-energy equivalence
energy-momentum relation
electromagnetic momentum
de-Broglie’s wave length
Opis:
As the particles originating from point-like entities are associated with infinite self energies, a postulate, that the scalar-potential associated with particles are bounded by a Planck scale potential is introduced. By defining the self energy of a particle, equivalences between charge-energy and mass-energy are obtained. The electromagnetic energy-momentum equation, de-Broglie’s electromagnetic wave-length and frequency for a charge particle in motion are presented resolving the “4/3” discrepancy. The non-covariance nature of the present classical electrodynamics is discussed and how the proposed postulate makes it a fully covariant theorem with the rest of the classical electrodynamics is presented. A way electromagnetic energy-momentum equation could potentially resolve the stability-problem of a charge particle is discussed and thereby a theoretical explanation to electron’s spin is presented.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 11; 54-64
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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