Viewpoints

Cool and Heavy

Cool and Heavy

January 26, 2015

Lin Tian

A new scheme for cooling a mechanical oscillator in a cavity may allow the observation of quantum effects on macroscopic objects and the realization of ultrasensitive gravitational-wave detectors.

Do Quantum Superpositions Have a Size Limit?

Do Quantum Superpositions Have a Size Limit?

January 20, 2015

George C. Knee

An atom’s walk in an optical lattice is used to test a key principle of quantum physics.

Orbital Engineering, By Design

Orbital Engineering, By Design

January 12, 2015

Scott A. Chambers

In transition-metal oxides, the ability to control which atomic orbitals are occupied by electrons could be used to develop materials with new functionalities.

Imaginary Magnetic Fields in the Real World

Imaginary Magnetic Fields in the Real World

January 5, 2015

Nerses Ananikian and Ralph Kenna

Imaginary magnetic fields predicted by the fundamental theory of phase transitions can be realized experimentally.

Synopses

A Black Hole for Polaritons

A Black Hole for Polaritons

January 22, 2015

The flow of hybrid electron-photon states through a black-hole-like “acoustic horizon” may produce an observable signature of Hawking radiation.

How to Spot a WIMP

How to Spot a WIMP

January 21, 2015

A theoretical study outlines the best strategies for identifying weakly interacting massive particles (WIMPs) in dark matter detectors.

It’s All in the Sequence

It’s All in the Sequence

January 15, 2015

The sequence of amino acids in certain biomolecules could be a factor in ensuring that they remain free of knots.

A Cavity Just for Two

A Cavity Just for Two

January 14, 2015

Two groups have independently isolated two atoms in a single cavity and measured that the collective light output is not simply the sum of single emitters.

Focus

Big Twist for Electron Beam

Big Twist for Electron Beam

January 23, 2015

Researchers generated an electron beam with very high orbital angular momentum—potentially good for atomic-scale images of the magnetism in materials.

Model Demonstrates Cause of Heart Arrhythmia

Model Demonstrates Cause of Heart Arrhythmia

January 16, 2015

A simple model of heart tissue that represents the architecture of cell-cell communication more realistically than previous models spontaneously develops faulty electrical waves that mimic a dangerous heart condition.

Notes from the Editors

Notes from the Editors: Highlights of the Year

Notes from the Editors: Highlights of the Year

December 22, 2014

A look back on our favorite stories from 2014.

Announcements

Celebrating the 2015 International Year of Light

Physics revisits six specific advances in the science and technology of light that were reported in the APS journals.


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