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120 papers · 1 filter
Computing the Maximum Slope Invariant in Tubular Groups
Christopher H. Cashen
We show that the maximum slope invariant for tubular groups is easy to calculate, and give an example of two tubular groups that are distinguishable by their maximum slopes but not…
The Ds and D+ Leptonic Decay Constants from Lattice QCD
A. Bazavov, C. Bernard, C. DeTar +16
We present the leptonic decay constants fDs and fD+ computed on the MILC collaboration's 2+1 flavor asqtad gauge ensembles. We use clover heavy quarks with the Fermilab interpretat…
Lipschitz Unimodal and Isotonic Regression on Paths and Trees
Pankaj K. Agarwal, Jeff M. Phillips, Bardia Sadri
We describe algorithms for finding the regression of t, a sequence of values, to the closest sequence s by mean squared error, so that s is always increasing (isotonicity) and so t…
Spectro-Perfectionism: An Algorithmic Framework for Photon Noise-Limited Extraction of Optical Fiber Spectroscopy
Adam S. Bolton, David J. Schlegel
We describe a new algorithm for the "perfect" extraction of one-dimensional spectra from two-dimensional (2D) digital images of optical fiber spectrographs, based on accurate 2D fo…
Anomalous low temperature ambipolar diffusion and Einstein relation
A. L. Efros
Regular Einstein relation, connecting the coefficient of ambipolar diffusion and the Dember field with mobilities, is generalized for the case of interacting electron-hole plasma.…
Quarkonium mass splittings in three-flavor lattice QCD
T. Burch, C. DeTar, M. Di Pierro +7
We report on calculations of the charmonium and bottomonium spectrum in lattice QCD. We use ensembles of gauge fields with three flavors of sea quarks, simulated with the asqtad im…