21,415 research outputs found
Line lists for the A2PI-X2Sigma+ (red) and {B2Sigma+-X2Sigma} (violet) Systems of CN, 13C14N, and 12C15N, and Application to Astronomical Spectra
New red and violet system line lists for the CN isotopologues 13C14N and
12C15N have been generated. These new transition data are combined with those
previously derived for 12C14N, and applied to the determination of CNO
abundances in the solar photosphere and in four red giant stars: Arcturus, the
bright very low-metallicity star HD 122563, and carbon-enhanced metal-poor
stars HD 196944 and HD 201626. When lines of both red and violet system lines
are detectable in a star, their derived N abundances are in good agreement. The
mean N abundances determined in this work generally are also in accord with
published values.Comment: ApJS, in press, 37 pages, 7 figures, 3 table
Entanglement Induced Fluctuations of Cold Bosons
We show that due to entanglement, quantum fluctuations may differ
significantly from statistical fluctuations. We calculate quantum fluctuations
of the particle number and of the energy in a sub-volume of a system of bosons
in a pure state, and briefly discuss the possibility of measuring them. We find
that energy fluctuations have a non-extensive nature.Comment: Replaced with published version. Added calculations, explanations and
clarifications, results unchange
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