Zobrazeno 1 - 10
of 11
pro vyhledávání: '"W. E. Bies"'
Publikováno v:
Journal of Physics A: Mathematical and General. 36:1605-1613
We study chaotic eigenfunctions in wedge-shaped and rectangular regions using a generalization of Berry's conjecture. An expression for the two-point correlation function is derived and verified numerically.
Autor:
Eric J. Heller, W E Bies
Publikováno v:
Journal of Physics A: Mathematical and General. 35:5673-5685
We investigate the distribution of nodes at and beyond the classical turning point of idealized chaotic quantum eigenfunctions. A formula for the density of nodes is derived in the semiclassical limit, and the rate at which this density falls off as
Publikováno v:
Journal of Applied Physics. 91:2033-2036
The techniques used previously to calculate the three-fold thermal conductivity reduction due to phonon dispersion in GaAs/AlAs superlattices (SLs) are applied to HgTe/CdTe SLs. The reduction factor is approximately the same, indicating that this SL
Publikováno v:
Journal of Applied Physics. 88:1498-1503
The experimentally observed order-of-magnitude reduction in the thermal conductivity along the growth axis of (GaAs)_n/(AlAs)_n (or n x n) superlattices is investigated theoretically for (2x2), (3x3) and (6x6) structures using an accurate model of th
Publikováno v:
Journal of Applied Physics. 86:5065-5069
Transport in an anisotropic material can create potentially large induced transverse fields which reduce the measured electric and thermal conductivities relative to those computed without the induced fields. These affect the thermoelectric figure of
Publikováno v:
Physical Review B. 65
General effective transport coefficients and the thermoelectric figure of merit $\mathrm{ZT}$ for anisotropic systems are derived. Sizable induced transverse fields on surfaces perpendicular to the current flow are shown to reduce the effective trans
Publikováno v:
Physical Review E. 63
We present a systematic survey of scarring and symmetry effects in the stadium billiard. The localization of individual eigenfunctions in Husimi phase space is studied first, and it is demonstrated that on average there is more localization than can
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 64(1 Pt 2)
The connection between scarring and tunneling in chaotic double-well potentials is studied in detail through the distribution of level splittings. The mean level splitting is found to have oscillations as a function of energy, as expected if scarring
Publikováno v:
The Astrophysical Journal. 352:532
Three elliptical galaxies with strong far-infrared emission (IRAS flux density greater than 1 Jy at 100 microns) were observed in the H I 21 cm line with the VLA. Only one of these, dwarf NGC 855, was detected. This galaxy has an extended H I distrib
Publikováno v:
The Astronomical Journal. 99:476
The IRAS data for a sample of nearby radio galaxies (z less than 0.13) are analyzed. Comparison of the infrared, radio, and optical data suggests that most of the long-wavelength infrared emission comes from cool interstellar dust for almost all of t