Recent Articles


Synopsis: Chilled Cavity Reaches New Level of Quiet

A crystal cavity for light and sound has been chilled close to its motional ground state. Read More »

Fluid Dynamics

Focus: The Difference Between Round and Square Pipes

Calculations of the motion of particles carried by a fluid flowing through a pipe find a surprising effect of the pipe's shape. Read More »

Atomic and Molecular Physics

Viewpoint: Casting New Light on Atomic Interactions

Optical pulses—tuned to a magic wavelength—provide both spatial and temporal control over the interactions between atoms in an ultracold gas. Read More »


Synopsis: Predicting the Thickness of Sea Ice

A new solution to an old equation will make it easier to model the evolution of sea-ice thickness. Read More »


Notes from the Editors: Astroparticle Physics Italian Style

A new film about dark matter and surprises from the Crab nebula were on display in Turin at the International Conference on Topics in Astroparticle and Underground Physics. Read More »


Synopsis: Bright Twins

An optical-fiber scheme generates a bright “twin beam”—a pair of quantum-correlated beams that could be used in high-precision metrology. Read More »

Particles and Fields

Synopsis: Testing Relativity with Planetary Motion

Observations of the orbital motion of planets around the Sun allow researchers to place stringent limits on Lorentz symmetry violations. Read More »

Soft Matter

Viewpoint: Caught in the Tube

Ring-shaped polymers have been used to detect a theoretical tube that restricts the motion of molten polymer chains. Read More »


Focus: Explaining the Periodicity of Snow Spikes

A new model explains the fixed periodicity of a rare snow formation that appears at high altitudes. Read More »

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