Effective mass (m*) is defined as: where x, y, z are the directions in the reciprocal Cartesian space (2π/A), En(k) is the dispersion relation for the n-th electronic band. The explicit form of the ...

We introduce the heat method for solving the single- or multiple-source shortest path problem on both flat and curved domains. A key insight is that distance computation can be split into two stages: ...

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As Florida gets ready for its annual Python Challenge in the Everglades, a less publicized effort by field biologists is also highlighting how extensive the Burmese python invasion has become. One ...