Now showing items 1-10 of 116
Two-fluid atmosphere for relativistic stars
(IOP Publishing Ltd, 1999-04-01)
We have extended the Vaidya radiating metric to include both a radiation fluid and a string fluid. This paper expands our brief introduction to extensions of the Schwarzschild vacuum which appeared in 1998 Phys. Rev. D ...
Ionization and Scattering for Short-Lived Potentials
(Kluwer Academic Publishers; Springer Science+Business Media, 1999-06)
We consider perturbations of a model quantum system consisting of a single bound state and continuum radiation modes. In many problems involving the interaction of matter and radiation, one is interested in the effect of ...
The formation of thick borders on an initially stationary fluid sheet
(The American Institute of Physics, 1999-09)
The formation of thick borders on an initially stationary two-dimensional fluid sheet surrounded by another fluid is examined by numerical simulations. The process is controlled by the density and the viscosity ratios, and ...
Universal correlation between energy gap and foldability for the random energy model and lattice proteins
(The American Institute of Physics, 1999-10-08)
The random energy model, originally used to analyze the physics of spin glasses, has been employed to explore what makes a protein a good folder versus a bad folder. In earlier work, the ratio of the folding temperature ...
Photoluminescence Studies on Self-Organized InAlAs/AlGaAs Quantum Dots under Pressure
(WILEY-VCH Verlag, 1999-01)
The pressure dependence of the low temperature photoluminescence (PL) in self-organized In 0.5 Al 0.5 As/Al 0.25 Ga 0.75 As quantum dots (QD) has been investigated up to 8 GPa. Interesting features of the QD PL observed ...
Infinite Prandtl Number Convection
(Kluwer Academic Publishers-Plenum Publishers; Kluwer Academic/Plenum Publishers ; Springer Science+Business Media, 1999-01)
We prove an inequality of the type N ≤ CR 1/3 (1+log + R ) 2/3 for the Nusselt number N in terms of the Rayleigh number R for the equations describing three-dimensional Rayleigh–Bénard convection in the limit of infinite ...
Erratum: Quasi-collinear and partially degenerate four-wave mixing: An alternative explanation of the phase-conjugation property of backward stimulated scattering [JETP 88, 235–245 (February 1999)]
(Nauka/Interperiodica; American Institute of Physics ; Springer Science+Business Media, 1999-06)
LETTER TO THE EDITOR: Exact critical exponent for the shortest-path scaling function in percolation
(IOP Publishing Ltd, 1999-10-29)
It is shown that the critical exponent g1 related to pair-connectiveness and shortest-path (or chemical distance) scaling, recently studied by Porto et al, Dokholyan et al and Grassberger, can be found exactly in two ...
Linear electro-optic effect due to the built-in electric field in InGaN/GaN quantum wells
(The American Institute of Physics, 1999-09-27)
A strong piezoelectric effect and large lattice mismatch allow one to incorporate high built-in electric fields in InGaN/GaN quantum wells. This letter examines the implications of these fields on the absorption spectra ...
Limitations on ultrafast optical switching in a semiconductor laser amplifier operating at transparency current
(The American Institute of Physics, 1999-11-01)
Ultrafast optical switching in a semiconductor laser amplifier (SLA) at transparency current is studied under a strong pump condition. The switch configuration is a nonlinear optical loop mirror with a SLA as the nonlinear ...