Skomski, Ralph, "Berry phase from a randomly fluctuating magnetic field" (2012). Ralph Skomski Publications. Paper 69. The quantum-mechanical Berry phase due to a randomly fluctuating magnetic field is calculated by exploiting an analogous random-walk problem in polymer physics. The phase depends on the time correlations of the magnetic field, despite the adiabatic nature of the Berry phase. A ...

We propose an experimental scheme to probe the Berry curvature of solids. Our method is sensitive to arbitrary regions of the Brillouin zone and employs only basic optical and terahertz techniques to yield a background-free signal. Using semiconductor quantum wells as a prototypical system, we discuss how to inject Berry curvature macroscopically and probe it in a way that provides information ...

The drug industry, powered by the huge profits of the 1980s, had lately embraced the concept of ‘strategic alliances’. Fervently in vogue, they were thought to solve a common problem: in a fractionated marketplace spanning countless diseases, an explosion in knowledge, and thousands of laboratories, no big company was big enough and no small one clever enough to go it alone. Berry Werth, The Bi...

The Oct. 10, 2015, suicide bomber attack at the village of Baga Sola in Chad killed and wounded dozens. Amid a long litany of terrible attacks launched by the Islamist group Boko Haram, this one was notable not so much for its severity, but for its perpetra- tors: one male, two females and two child bombers.