Hugh Everett III

1930–1982 · quantum mechanics, interpretations of quantum theory, quantum cosmology

American physicist, creator of the many-worlds interpretation of quantum mechanics (1957), which asserts that the wave function never collapses, and all possible outcomes of quantum events are realized in parallel universes. Although his ideas were not recognized during his lifetime, they later became the foundation of quantum cosmology and decoherence.

Biography

Graduated from the Catholic University of America, then studied physics at Princeton under John Wheeler. His dissertation 'The Theory of the Universal Wave Function' contained the many-worlds interpretation. After academic setbacks, worked in the defense sector, doing mathematical modeling and analysis.

Key discoveries

Many-worlds interpretation: rejection of wave function collapse and postulation of the existence of many classical worlds branching off at every quantum event.
Theory of the universal wave function: formalism in which the observer and the measured system are described by a single quantum wave function.

💡 Everett was a passionate proponent of rational egoism and believed that the many-worlds interpretation guaranteed him immortality, as there would always be a branch where he survives.

"He believed that the objective world simply exists, and there is no need for wave function collapse."

Concepts

superposition quantum optics

Laws

Schrödinger equation

Scientists

Charles Townes Alain Aspect David Deutsch Louis de Broglie Shuji Nakamura Albert A. Michelson Serge Haroche John Clauser

Quantum Physics2026-06-261 minarXiv:2606.28640express

Vortices in the Quantum World

A regular object moves along a predictable path, like a ball. In the quantum world, a particle is smeared into a probability cloud. To find order in this fog, scientists have recast Schrödinger's equation in the language of flowing water.

Vassiliy Lubchenko

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Nuclear Theory2026-08-011 minarXiv:2608.00529express

Quantum Transformer for 600 Dimensions

In a noisy hall, an interpreter tries to catch every word, but rustles and echoes muddle the meaning. That's roughly how conventional computer methods handle complex quantum systems: the more particles and the stronger their correlations, the faster calculations drown in interference.

Lin-Jing Jiang·Fu Ma·Pei Li·Kai-Jia Sun·Guo-Liang Ma·Yu-Gang Ma

Schrödinger equation Erwin Schrödinger Hugh Everett III Alain Aspect quantum measurement quantum algorithm path integral quantum error correction quantum key distribution

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Hugh Everett III

Biography

Key discoveries

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