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quantum gravity

Naked singularities
quantum gravity

Where Gravity Is Weak and Naked Singularities Are Verboten

June 20, 2017

Recent calculations tie together two conjectures about gravity, potentially revealing new truths about its elusive quantum nature.

animated gif of a fractal tunnel
theoretical physics

Physicists Uncover Geometric ‘Theory Space’

February 23, 2017

A decades-old method called the “bootstrap” is enabling new discoveries about the geometry underlying all quantum theories.

Warped time. Olena Shmahalo/Quanta Magazine
Abstractions blog

Quantum Gravity’s Time Problem

December 1, 2016

The effort to unify quantum mechanics and general relativity means reconciling totally different notions of time.

quantum gravity

What Sonic Black Holes Say About Real Ones

November 8, 2016

Can a fluid analogue of a black hole point physicists toward the theory of quantum gravity, or is it a red herring?

cosmology

Physicists Hunt for the Big Bang’s Triangles

April 19, 2016

The story of the universe’s birth — and evidence for string theory — could be found in triangles and myriad other shapes in the sky.

Q&A

Michael Atiyah’s Imaginative State of Mind

March 3, 2016

At 86, Britain’s preeminent mathematical matchmaker is still tackling the big questions and dreaming of a union between the quantum and the gravitational forces.

quantum physics

Quantum Weirdness Now a Matter of Time

January 19, 2016

Bizarre quantum bonds connect distinct moments in time, suggesting that quantum links — not space-time — constitute the fundamental structure of the universe.

Physics

String Theory Meets Loop Quantum Gravity

January 12, 2016

Two leading candidates for a “theory of everything,” long thought to be incompatible, may be two sides of the same coin.

Physics

A Fight for the Soul of Science

December 16, 2015

If a theory can’t be tested, is it still science?