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11 papers · 1 filter
Star-Forming Complexes in Galaxies
Bruce G. Elmegreen
Star complexes are the largest globular regions of star formation in galaxies. If there is a spiral density wave, nuclear ring, tidal arm, or other well-defined stellar structure,…
A model for selective line-driven acceleration of ions in the solar winds of OB-type stars occurring via the nonlinear process of stimulated Rayleigh scattering
P. P. Sorokin, J. H. Glownia
A conceptually novel model - one in which stimulated (i.e. induced) resonance Rayleigh scattering causes ions of select species to become accelerated to very high terminal velociti…
Local Fault-tolerant Quantum Computation
Krysta M. Svore, Barbara M. Terhal, David P. DiVincenzo
We analyze and study the effects of locality on the fault-tolerance threshold for quantum computation. We analytically estimate how the threshold will depend on a scale parameter r…
Security Trade-offs in Ancilla-Free Quantum Bit Commitment in the Presence of Superselection Rules
D. P. DiVincenzo, J. A. Smolin, B. M. Terhal
Security trade-offs have been established for one-way bit commitment in quant-ph/0106019. We study this trade-off in two superselection settings. We show that for an `abelian' supe…
Leibniz, Randomness and the Halting Probability
G. J. Chaitin
This paper, which is dedicated to Alan Turing on the 50th anniversary of his death, gives an overview and discusses the philosophical implications of incompleteness, uncomputabilit…
Gravity, Turbulence, and Star Formation
Bruce G. Elmegreen
The azimuthal power spectra of optical emission from star formation and dust in spiral galaxies resembles the azimuthal power spectra of HI emission from the LMC. These and other p…