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Magnetic Fields in Chaos

December 21, 2009

Electric current flowing through simple wire arrangements can induce chaotic magnetic fields, according to computations, so magnetic chaos is probably common in everyday electronics.

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Viewpoints

Warping the cone on a Topological Insulator

M. Zahid Hasan, Hsin Lin and Arun Bansil, December 21, 2009The energy-momentum relationship of electrons on the surface of an ideal topological insulator forms a cone, which, when warped, can lead to unusual phenomena such as enhanced interference around defects and a magnetically ordered exotic surface. Read More »

Getting to the bottom of the heavy quark jet puzzle

M. Gyulassy, December 21, 2009A recent theory of high-energy bottom quark jet quenching in nuclear collisions accentuates the novelty of heavy quark jet dynamics in strongly coupled quark-gluon plasmas discovered at the Relativistic Heavy Ion Collider. Read More »

Switching magnetism with electric fields

Wolfgang Kleemann, December 14, 2009The magnetic state of a multiferroic device can be controlled purely by an electric field—a property that could greatly reduce overheating in data storage devices. Read More »

Looking for parity violation in heavy-ion collisions

Berndt Müller, December 14, 2009The STAR detector at RHIC has measured a signal that may indicate parity violation occurs in metastable regions of the superdense matter. Read More »

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Trends

Searching for the Higgs

Gail G. Hanson, December 14, 2009Researchers at the Large Hadron Collider are at the start of a challenging hunt for the Higgs boson, a particle thought to confer the property of mass on every other particle. Read More »

Taking the wraps off cloaking

John Pendry, November 16, 2009Scientists and novelists have been intrigued for centuries by the possibility of hiding an object so completely that neither trace of the object nor of its cloak is to be found. Recent theoretical developments show that cloaking is, in principle, possible for electromagnetic waves and to a limited extent for other types of wave, such as acoustic waves. An energetic program of experimental research has shown some of the schemes to be realizable in practice. Read More »