Search results for dirac

Quantum Physics Jun 8, 2009

Quantum Mysticism: Gone but Not Forgotten

Does mysticism have a place in quantum mechanics today, or is the idea that the mind plays a role in creating reality best left to philosophical meditations? Harvard historian Juan Miguel Marin argues the former - not because ...

General Physics Jun 10, 2013

Simple theory may explain dark matter

Most of the matter in the universe may be made out of particles that possess an unusual, donut-shaped electromagnetic field called an anapole.

General Physics Dec 8, 2010

Theoretical physics breakthrough: Generating matter and antimatter from the vacuum

Under just the right conditions -- which involve an ultra-high-intensity laser beam and a two-mile-long particle accelerator -- it could be possible to create something out of nothing, according to University of Michigan ...

General Physics Jun 5, 2012

Physicists split an atom using quantum mechanics precision

Researchers from the University of Bonn have just shown how a single atom can be split into its two halves, pulled apart and put back together again. While the word "atom" literally means "indivisible," the laws of quantum ...

Quantum Physics Apr 10, 2020

First sighting of mysterious Majorana fermion on a common metal

Physicists at MIT and elsewhere have observed evidence of Majorana fermions—particles that are theorized to also be their own antiparticle—on the surface of a common metal: gold. This is the first sighting of Majorana ...

Mathematics May 25, 2016

40-year math mystery and four generations of figuring: Proof of Kelmans-Seymour Conjecture in Graph Theory

This may sound like a familiar kind of riddle: How many brilliant mathematicians does it take to come up with and prove the Kelmans-Seymour Conjecture?

Quantum Physics May 31, 2013

Theorists apply loop quantum gravity theory to black hole

(Phys.org) —Physicists Rodolfo Gambini and Jorge Pullin of University of the Republic in Montevideo, Uruguay, and Louisiana State University respectively, have applied the theory of Loop Quantum Gravity (LQG) to a simplified ...

Optics & Photonics Jan 15, 2021

Towards applications: ultra-low-loss on-chip zero-index materials

A refractive index of zero induces a wave vector with zero amplitude and undefined direction. Therefore, light propagating inside a zero-index medium does not accumulate any spatial phase advance, resulting in perfect spatial ...

General Physics Aug 9, 2016

The mysterious missing magnetic monopole

You've probably heard of the Higgs boson. This elusive particle was predicted to exist long ago and helped explain why the universe works the way it does, but it took decades for us to detect.

Sep 22, 2005

What is antimatter and why does it matter?

The place is England. The year is 1928. One of the founding theorists of quantum mechanics, Paul Dirac, is scratching his head because solutions to his equations have yielded unexpected results. For the solutions to make ...

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