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From the 1 of 3.3k papers with an AI index.

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20022026
most citedQuantum ESPRESSO: a modular and open-source software project for quantum simulations of materials

29.3k citations

Showing 2007Show all

143 papers · 1 filter

astro-ph2007★ 97 cited

Variability of Disk Emission in Pre-Main Sequence and Related Stars. I. HD 31648 and HD 163296 - Isolated Herbig Ae Stars Driving Herbig-Haro Flows

M. L. Sitko, W. J. Carpenter, R. L. Kimes +13

Infrared photometry and spectroscopy covering a time span of a quarter century are presented for HD 31648 (MWC 480) and HD 163296 (MWC 275). Both are isolated Herbig Ae stars that…

astro-ph2007★ 65 cited

Infrared and X-Ray Evidence for Circumstellar Grain Destruction by the Blast Wave of Supernova 1987A

E. Dwek, R. G. Arendt, P. Bouchet +10

Multiwavelength observations of supernova remnant (SNR) 1987A show that its morphology and luminosity are rapidly changing at X-ray, optical, infrared, and radio wavelengths as the…

hep-th2007★ 19 cited

Planar Limit of Orientifold Field Theories and Emergent Center Symmetry

Adi Armoni, Mikhail Shifman, Mithat Unsal

We consider orientifold field theories (i.e. SU(N) Yang--Mills theories with fermions in the two-index symmetric or antisymmetric representations) on R3xS1 where the compact dimens…

math.ST2007★ 973 cited

On the "degrees of freedom" of the lasso

Hui Zou, Trevor Hastie, Robert Tibshirani

We study the effective degrees of freedom of the lasso in the framework of Stein's unbiased risk estimation (SURE). We show that the number of nonzero coefficients is an unbiased e…

astro-ph2007★ 8 cited

X-Atlas: An Online Archive of Chandra's Stellar High Energy Transmission Gratings Observations

Owen W. Westbrook, Nancy Remage Evans, Scott J. Wolk +6

The high-resolution X-ray spectroscopy made possible by the 1999 deployment of the Chandra X-ray Observatory has revolutionized our understanding of stellar X-ray emission. Many pu…

math.CO2007★ 2 cited

The sorting order on a Coxeter group

Drew Armstrong

Let be an arbitrary Coxeter system. For each word in the generators we define a partial order--called the {\sf -sorting order}--on the set of group elements $W_ω\sub…