Viewpoints

Arrow of Time Emerges in a Gravitational System

Arrow of Time Emerges in a Gravitational System

October 29, 2014

Steven Carlip

Study of masses interacting via gravity challenges the idea that special initial conditions are needed to give time a direction.

Photonic Crystals “Go Hyper”

Photonic Crystals “Go Hyper”

October 27, 2014

Stavroula Foteinopoulou

A design for a photonic crystal made with so-called hyperbolic metamaterials could provide unprecedented control of light waves confined to the surface.

Two Photons into One

Two Photons into One

October 22, 2014

Zheshen Zhang

The interaction between two individual photons in a nonlinear optical waveguide offers new possibilities for quantum information processing.

Particle Scattering Simplified

Particle Scattering Simplified

October 20, 2014

Lance J. Dixon

A new formula for the scattering of massless particles may simplify predictions and analyses of LHC experiments and shed new light on quantum gravity theories.

Synopses

Beating Turbulence to Find a Mate

Beating Turbulence to Find a Mate

October 28, 2014

A statistical-physics model provides an accurate description of how animals communicate via pheromones in a turbulent atmospheric environment.

A Shield for Rydberg Atoms

A Shield for Rydberg Atoms

October 23, 2014

The quantum properties of cold rubidium atoms on a chip can be protected by a thin metal layer on the chip’s surface.

Friction Gradients Guide Artificial Walkers

Friction Gradients Guide Artificial Walkers

October 22, 2014

Pairs of micrometer-sized magnetic beads could “hunt” for chemicals by sensing changes in surface friction.

Seeing the Glass of Milk as All Empty

Seeing the Glass of Milk as All Empty

October 21, 2014

A normally opaque medium can become fully transparent to properly tailored acoustic waves.

Focus

Holey Rubber Slab Has Controllable Stiffness

Holey Rubber Slab Has Controllable Stiffness

October 24, 2014

Squeezing a holey rubber slab changes its stiffness over a wide range in the direction perpendicular to the squeeze.

Saving Space with Quantum Information

Saving Space with Quantum Information

October 17, 2014

A technique that packs the full content of three bits of quantum information into two may be a space saver for quantum computers.

Notes from the Editors

Blue Was the Hardest Color

Blue Was the Hardest Color

October 13, 2014

The winners of the 2014 Physics Nobel Prize solved several major engineering problems over a period of decades before finally producing a useful blue LED.


Keep Up With Physics

twitter icon feed icon mail icon

American Physical Society Sites


APS Home

Journals

PhysicsCentral

Physics Frontline