Results 51 to 60 of about 1,087,074 (217)
Unitarity issue in BTZ black holes
, 2005 We study the wave equation for a massive scalar in three-dimensional AdS-black hole spacetimes to understand the unitarity issues in a semiclassical way.
Abramowitz M. +7 more
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Teaching Partial Differential Equations with CAS [PDF]
, 2018 Partial Differential Equations (PDE) are one of the topics where Engineering students find more difficulties when facing Math subjects. A basic course in Partial Differential Equations (PDE) in Engineering, usually deals at least, with the following ...
Aguilera-Venegas, Gabriel +5 more
core
, 2014 We construct a world model consisting of a matter field living in 4 dimensional spacetime and a gravitational field living in 11 dimensional spacetime.
Doyen, Gerold, Drakova, Deiana
core +1 more source
Floquet Energies and Quantum Hall Effect in a Periodic Potential
, 1998 The Quantum Hall Effect for free electrons in external periodic field is discussed without using the linear response approximation. We find that the Hall conductivity is related in a simple way to Floquet energies (associated to the Schroedinger equation
Dana I. +3 more
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Pseudo-Spin Polarized One-Way Elastic Wave Eigenstates in One-Dimensional Phononic Superlattices
CrystalsWe investigate a one-dimensional discrete binary elastic superlattice bridging continuous models of superlattices that showcase a one-way propagation character, as well as the discrete elastic Su–Schrieffer–Heeger model, which does not exhibit this ...
Pierre A. Deymier +3 more
doaj +1 more source
Chiral spin-wave edge modes in dipolar magnetic thin films
, 2013 Based on a linearized Landau-Lifshitz equation, we show that two-dimensional periodic allay of ferromagnetic particles coupled with magnetic dipole-dipole interactions supports chiral spin-wave edge modes, when subjected under the magnetic field applied ...
Matsumoto, Ryo +4 more
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Electronic Journal of Differential Equations, 2018 We give a factorization procedure for a strictly hyperbolic partial differential operator of second order with logarithmic slow scale coefficients. From this we can microlocally diagonalize the full wave operator which results in a coupled system of ...
Martina Glogowatz
doaj
, 2008 This paper considers large-scale simulations of wave propagation phenomena. We argue that it is possible to accurately compute a wavefield by decomposing it onto a largely incomplete set of eigenfunctions of the Helmholtz operator, chosen at random, and ...
Demanet, Laurent, Peyré, Gabriel
core +4 more sources
, 2012 The gravitational wave signal from a binary neutron star inspiral contains information on the nuclear equation of state. This information is contained in a combination of the tidal polarizability parameters of the two neutron stars and is clearest in the
Alessandro Nagar +7 more
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IEEE Access, 2020 In the surface field integral equations (SIEs) from three-dimensional homogeneous dielectric objects, the equivalence electric and magnetic currents on the discontinuous interfaces between different homogeneous media are two independent sources. When the
Wei-Dong Li, Jun-Xia Miao, Wei Hong
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