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quantum gravity

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Math Meets QFT

The Mystery at the Heart of Physics That Only Math Can Solve

By Kevin Hartnett
June 10, 2021
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The accelerating effort to understand the mathematics of quantum field theory will have profound consequences for both math and physics.

An illustration of an airplane with its contrails coming out in front of it.
quantum gravity

Quantum Mischief Rewrites the Laws of Cause and Effect

By Natalie Wolchover
March 11, 2021
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Spurred on by quantum experiments that scramble the ordering of causes and their effects, some physicists are figuring out how to abandon causality altogether.

Illustration of a particle
Hidden Structure

What Is a Particle?

By Natalie Wolchover
November 12, 2020
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It has been thought of as many things: a pointlike object, an excitation of a field, a speck of pure math that has cut into reality. But never has physicists’ conception of a particle changed more than it is changing now.

Illustration of a black hole
Hidden Structure

The Most Famous Paradox in Physics Nears Its End

By George Musser
October 29, 2020
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In a landmark series of calculations, physicists have proved that black holes can shed information.

Claudia de Rham portrait
Q&A

The Physicist Who Slayed Gravity’s Ghosts

By Thomas Lewton
August 18, 2020
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Claudia de Rham showed how theories of “massive gravity” could potentially get rid of the need for dark energy.

An apple being jostled by gravitons
gravitational waves

How the Bits of Quantum Gravity Can Buzz

By Thomas Lewton
July 23, 2020
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New calculations show how hypothetical particles called gravitons would give rise to a special kind of noise.

A black hole shooting thunderbolts.
quantum gravity

Black Hole Paradoxes Reveal a Fundamental Link Between Energy and Order

By Natalie Wolchover
May 28, 2020
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By chewing on the problems posed by “extremal” black holes, physicists have exposed a surprising and universal connection between energy and entropy.

theoretical physics

Does Time Really Flow? New Clues Come From a Century-Old Approach to Math.

By Natalie Wolchover
April 7, 2020
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The laws of physics imply that the passage of time is an illusion. To avoid this conclusion, we might have to rethink the reality of infinitely precise numbers.

A domino, a two of clubs, and a clock face.
Abstractions blog

Why the Laws of Physics Are Inevitable

By Natalie Wolchover
December 9, 2019
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By considering simple symmetries, physicists working on the “bootstrap” can rediscover the basic form of the known forces that shape the universe.


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