Spin Waves
Mostrando 13-15 de 15 artigos, teses e dissertações.
-
13. Analytic construction of Hartree-Fock density matrices
A method is presented for variational calculation of the energy and the spin densities derived from a single-determinant wavefunction. Sum and difference coordinates [unk]R = ½([unk]r1 + [unk]r1) and [unk]r = [unk]r1 - [unk]r1 are introduced, and the density matrix P([unk]r1,[unk]r1) is expanded in partial waves in the new coordinate frame: [Formula: see te
-
14. g-Factor of electron centered in symmetric cavity
The cyclotron frequency of an electron localized in the center of a cylindrical microwave cavity differs slightly from that in free space. To see this, the system is modeled by a series resonant lc circuit for the cyclotron motion connected across the center of a section of two-wire transmission line (the cavity). When the transmission line is infinitely lon
-
15. Stochastic and mesoscopic models for tropical convection
A new way to parametrize certain aspects of tropical convection through stochastic and mesoscopic models is developed here. The technical idea is to adapt tools from statistical physics and materials science to model important unresolved features of tropical convection. This new strategy consists of modeling the unresolved effects of convective inhibition in
The National Academy of Sciences.