Semiclassical quantization with bifurcating orbits

Bifurcations of classical orbits introduce divergences into semiclassical spectra which have to be smoothed with the help of uniform approximations. We develop a technique to extract individual energy levels from semiclassical spectra involving uniform approximations. As a prototype example, the method is shown to yield excellent results for photo-absorption spectra for the hydrogen atom in an electric field in a spectral range where the abundance of bifurcations would render the standard closed-orbit formula without uniform approximations useless. Our method immediately applies to semiclassical trace formulae as well as closed-orbit theory and offers a general technique for the semiclassical quantization of arbitrary systems

Closing the Gap: How Improving Information Flow Can Help Community-Based Organizations Keep Uninsured Kids From Falling Through the Cracks

Evaluates how community-based organizations used a tool for systematic, ongoing data exchange with the state to monitor children's enrollment and redetermination status in public health insurance. Explores its potential to boost outreach and enrollment