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condensed matter physics

Paradoxical Crystal Baffles Physicists

At super-low temperatures, a crystal called samarium hexaboride behaves in an unexplained, imagination-stretching way.


Why the Big Bang’s Light May Have a Tilt

Scientists haven’t tested the Big Bang’s light for a revealing shift in 25 years. A new experiment aims to change that.


The Fuzzball Fix for a Black Hole Paradox

By replacing black holes with fuzzballs — dense, star-like objects from string theory — researchers think they can avoid some knotty paradoxes at the edge of physics.


A Private View of Quantum Reality

Quantum theorist Christopher Fuchs explains how to solve the paradoxes of quantum mechanics. His price: physics gets personal.


A New Theory to Explain the Higgs Mass

Three physicists have proposed a new solution to one of the deepest mysteries in particle physics: why the Higgs boson has such a tiny mass.


The Particle That Broke a Cosmic Speed Limit

Physicists are beginning to unravel the mysteries of ultrahigh-energy cosmic rays, particles accelerated by the most powerful forces in the universe.

The Quantum Fabric of Space-Time

Interactive: What Is Space?

Imagine the fabric of space-time peeled back layer by layer.

The Quantum Fabric of Space-Time

How Quantum Pairs Stitch Space-Time

New tools may reveal how quantum information builds the structure of space.

The Quantum Fabric of Space-Time

Wormholes Untangle a Black Hole Paradox

A bold new idea aims to link two famously discordant descriptions of nature. In doing so, it may also reveal how space-time owes its existence to the spooky connections of quantum information.