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quantum gravity

Illustration of an amplituhedron.
theoretical physics

A Jewel at the Heart of Quantum Physics

September 17, 2013

Physicists have discovered a jewel-shaped geometric object that challenges the notion that space and time are fundamental constituents of nature.

string theory

A Strange Side to Nature

July 1, 2013

New findings suggest that beneath the surface of quantum theory lies a vibrant string theory world where some matter corresponds to black holes in higher dimensions.


Alice and Bob Meet the Wall of Fire

December 21, 2012

If a new hypothesis about black hole firewalls proves correct, at least one of three cherished notions in theoretical physics must be wrong.