33,942 research outputs found
Expanded Quantum Cryptographic Entangling Probe
The paper [Howard E. Brandt, "Quantum Cryptographic Entangling Probe," Phys.
Rev. A 71, 042312 (2005)] is generalized to include the full range of error
rates for the projectively measured quantum cryptographic entangling probe.Comment: 4 page
NSV 11749: Symbiotic Nova, Not a Born-Again Red Giant
NSV 11749 is a little-studied variable star, discovered by W. J. Luyten,
which had a long-duration outburst around the year 1903, reaching blue
magnitude 12.5 at maximum. Following the outburst, it has apparently been
quiescent at about blue magnitude 17 for the past century. It was recently
suggested that NSV 11749 may have been a low- or intermediate-mass star that
underwent a final helium shell flash, making it temporarily a "born-again" red
giant. If so, it would be only the fourth known member of this class, along
with V605 Aql, FG Sge, and V4334 Sgr. However, our newly obtained optical and
near-IR spectra of the object show that it is instead a symbiotic binary, with
strong Balmer and He I-II emission lines, combined with a cool red-giant
companion of spectral type M1-2 III. The 1903 outburst was most likely a
symbiotic nova event, of which less than a dozen are known at present.Comment: 13 pages, 3 figures, Accepted for publication in PAS
Community-based development of multiple-use marine protected areas: promoting dtewardship and sharing responsibility for conservation in the San Andres Archipelago, Colombia
Irrelevant Exceptional Divisors for Curves on a Smooth Surface
Given a singular curve on a smooth surface, we determine which exceptional
divisors on the minimal resolution of that curve contribute toward its jumping
numbers.Comment: Added reference to Favre & Jonsson and a slight extension of the
comment immediately following Definition 2.
Generalizations of the St\"ormer Problem for Dust Grain Orbits
We consider the generalized St\"ormer Problem that includes the
electromagnetic and gravitational forces on a charged dust grain near a planet.
For dust grains a typical charge to mass ratio is such that neither force can
be neglected. Including the gravitational force gives rise to stable circular
orbits that encircle that plane entirely above/below the equatorial plane. The
effects of the different forces are discussed in detail. A modified 3rd
Kepler's law is found and analyzed for dust grains.Comment: 21 pages LaTeX, 12 figure
Preserving the validity of the Two-Higgs Doublet Model up to the Planck scale
We examine the constraints on the two Higgs doublet model (2HDM) due to the
stability of the scalar potential and absence of Landau poles at energy scales
below the Planck scale. We employ the most general 2HDM that incorporates an
approximately Standard Model (SM) Higgs boson with a flavor aligned Yukawa
sector to eliminate potential tree-level Higgs-mediated flavor changing neutral
currents. Using basis independent techniques, we exhibit robust regimes of the
2HDM parameter space with a 125 GeV SM-like Higgs boson that is stable and
perturbative up to the Planck scale. Implications for the heavy scalar spectrum
are exhibited.Comment: 36 pages, 4 figures, 4 tables (Version 3: typographical error in eq.
(A.28) corrected
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