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extra dimensions

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The Journey to Define Dimension

By David S. Richeson
September 13, 2021
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The concept of dimension seems simple enough, but mathematicians struggled for centuries to precisely define and understand it.

Multimedia

The Map of Mathematics

By Kevin Hartnett
February 13, 2020
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Explore our surprisingly simple, absurdly ambitious and necessarily incomplete guide to the boundless mathematical universe.

520px illustration for the bounce model theory
cosmology

How the Universe Got Its Bounce Back

By Natalie Wolchover
January 31, 2018
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Cosmologists have shown that it’s theoretically possible for a contracting universe to bounce and expand. The new work resuscitates an old idea that directly challenges the Big Bang theory of cosmic origins.

Q&A

Moonshine Master Toys With String Theory

By Natalie Wolchover
August 4, 2016
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The physicist-mathematician Miranda Cheng is working to harness a mysterious connection between string theory, algebra and number theory.

Inside this chamber, silica spheres probe for hidden extra dimensions, distortions of gravity, and dark-matter particles. | Peter DaSilva for Quanta Magazine
experimental physics

Tiny Tests Seek the Universe’s Big Mysteries

By Joshua Sokol
May 3, 2016
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The search for exotic new physical phenomena is being led by huge experiments like the Large Hadron Collider. But at the other end of the spectrum lie tabletop experiments — small-scale probes of hidden dimensions, dark matter and dark energy.

Physics

String Theory Meets Loop Quantum Gravity

By Sabine Hossenfelder
January 12, 2016
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Two leading candidates for a “theory of everything,” long thought to be incompatible, may be two sides of the same coin.

Physics

Visions of Future Physics

By Natalie Wolchover
September 22, 2015
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Nima Arkani-Hamed is championing a campaign to build the world’s largest particle collider, even as he pursues a new vision of the laws of nature.

Multimedia

Theories of Everything, Mapped

By Natalie Wolchover
August 3, 2015
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Explore the deepest mysteries at the frontier of fundamental physics, and the most promising ideas put forth to solve them.

theoretical physics

In Fake Universes, Evidence for String Theory

By Natalie Wolchover
February 18, 2015
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If string theorists can show that their framework is the only consistent theory of quantum gravity, does that make it true even without tangible evidence?

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