In a spin chain, that motion is waves like those seen at stadiums. Flip one atom, and it will flip its neighbors, who will flip their neighbors, and so on. These waves are still extremely complicated… [+3611 chars]
How Hans Bethe Stumbled Upon Perfect Quantum Theories - Quanta Magazine
Quantum calculations amount to sophisticated estimates. But in 1931, Hans Bethe intuited precisely how a chain of particles would behave — an insight that had far-reaching consequences.
By:Matt von Hippel
Source:Quanta Magazine
Published:
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