Viewpoints

Observing the Great Spin and Orbital Swap

Observing the Great Spin and Orbital Swap

September 15, 2014

Ana Maria Rey

The experimental observation of spin-orbital exchange interactions in ultracold atoms opens a window for the exploration of poorly understood magnetic behaviors.

Diamond and Silicon Get Entangled

Diamond and Silicon Get Entangled

September 11, 2014

Andrew D. Greentree

Two silicon-vacancy centers in diamond can emit photons that are indistinguishable—suggesting they have potential as building blocks for a diamond-based quantum computer.

Microwave Photons Move Out of Equilibrium

Microwave Photons Move Out of Equilibrium

September 8, 2014

Mohammad Hafezi

A circuit for microwave photons provides a useful test bed for nonequilibrium physics.

The Beginning of Extra-Galactic Neutrino Astronomy

The Beginning of Extra-Galactic Neutrino Astronomy

September 2, 2014

Eli Waxman

What can high-energy neutrinos tell us about astrophysical objects beyond our galaxy?

Synopses

More Dark Matter Hints from Cosmic Rays?

More Dark Matter Hints from Cosmic Rays?

September 18, 2014

A particle detector onboard the International Space Station has revealed differences between the spectrum of cosmic-ray positrons and electrons, which might be a hint of dark matter annihilation processes.

Patchy Particles without the Patches

Patchy Particles without the Patches

September 17, 2014

Mobile DNA strands could provide a different way to patch together DNA-coated particles to form colloidal structures whose structure and function can be tailored.

Relativity is Right on Time, Again

Relativity is Right on Time, Again

September 16, 2014

An experiment with fast-moving ions verifies relativistic time dilation to a new level of precision, placing constraints on certain quantum gravity theories.

Testing the Weak Interaction with Potassium

Testing the Weak Interaction with Potassium

September 11, 2014

Potassium-37 is one of several isotopes that could be used to directly test the standard model weak interaction.

Focus

Curvy Photon Trajectories Could Be Detectable

Curvy Photon Trajectories Could Be Detectable

September 19, 2014

Quantum mechanics permits particles to follow bizarre, looping and curving trajectories, usually with very low probability. But a calculation shows that in some cases, these paths can have significant and possibly measurable effects.

Electron Handedness Affects Gas Molecule Breakup

Electron Handedness Affects Gas Molecule Breakup

September 12, 2014

Experiments show that beams of left- or right-handed electrons are not equal-opportunity destroyers of molecules having two mirror-image forms, which supports the idea that primordial cosmic rays generated the asymmetry in biological molecules.

Notes from the Editors

Bargaining for a Better Helium Deal

Bargaining for a Better Helium Deal

July 17, 2014

A pilot program jointly run by the APS hopes to use the collective bargaining power of many researchers to negotiate a better price for liquid helium.


Keep Up With Physics

twitter icon feed icon mail icon

American Physical Society Sites


APS Home

Journals

PhysicsCentral

Physics Frontline