In physics, a spin foam is a topological structure made out of two-dimensional faces that represents one of the configurations that must be summed to obtain a Feynman's path integral (functional integration) description of quantum gravity. It is closely related to loop quantum gravity.
Read more about Spin Foam: Spin Foam in Loop Quantum Gravity, The Idea, Definition
Famous quotes containing the words spin and/or foam:
“Words can have no single fixed meaning. Like wayward electrons, they can spin away from their initial orbit and enter a wider magnetic field. No one owns them or has a proprietary right to dictate how they will be used.”
—David Lehman (b. 1948)
““To dine!” she shrieked in dragon-wrath.
“To swallow wines all foam and froth!
To simper at a table-cloth!”
Say, can thy noble spirit stoop
To join the gormandising troop
Who find solace in the soup?”
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)