10,209 research outputs found
Rising labor shortage hits China deltas
This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.CLW_2010_Report_China_rising_labor.pdf: 38 downloads, before Oct. 1, 2020
s-Wave Scattering Resonances Induced by Dipolar Interactions of Polar Molecules
We show that s-wave scattering resonances induced by dipolar interactions in
a polar molecular gas have a universal large and positive effective range,
which is very different from Feshbach resonances realized in cold atoms before,
where the effective range is either negligible or negative. Such a difference
has important consequence in many-body physics. At high temperature regime, a
positive effective range gives rise to stronger repulsive interaction energy
for positive scattering length, and weaker attractive interaction energy for
negative scattering length. While at low-temperatures, we study polaron problem
formed by single impurity molecule, and we find that the polaron binding energy
increases at the BEC side and decreases at the BCS side. All these effects are
in opposite to narrow Feshbach resonances where the effective range is
negative.Comment: 5 pages, 3 figures, published versio
Nonlinear reconstruction
We present a direct approach to nonparametrically reconstruct the linear
density field from an observed nonlinear map. We solve for the unique
displacement potential consistent with the nonlinear density and positive
definite coordinate transformation using a multigrid algorithm. We show that we
recover the linear initial conditions up to the nonlinear scale
( for ) with minimal
computational cost. This reconstruction approach generalizes the linear
displacement theory to fully nonlinear fields, potentially substantially
expanding the baryon acoustic oscillations and redshift space distortions
information content of dense large scale structure surveys, including for
example SDSS main sample and 21cm intensity mapping initiatives.Comment: 7 pages, 7 figures, published versio
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