65,575 research outputs found
Four Testable Predictions of Instanton Cosmology
A new cosmological model makes the following predictions: (1) The
deceleration parameter is approximately zero. (2) The mass density
parameter is less than 1. (3) The universe is spatially closed,
but is asymptotically flat as , regardless of its matter content.
(4) The age of the universe is approximately 15 Gyr if the Hubble parameter
is approximately 0.65.Comment: 4 pages. 2 minor changes to reconcile with the printed versio
Optical Dipole Trapping beyond Rotating Wave Approximation: The case of Large Detuning
We show that the inclusion of counter-rotating terms, usually dropped in
evaluations of interaction of an electric dipole of a two level atom with the
electromagnetic field, leads to significant modifications of trapping potential
in the case of large detuning. The results are shown to be in excellent
numerical agreement with recent experimental findings, for the case of modes of
Laguerre-Gauss spatial profile.Comment: 13 pages, 2 figure
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