Quantum criticality in an Ising chain: experimental evidence for emergent E8 symmetry.

Quantum phase transitions take place between distinct phases of matter at zero temperature. Near the transition point, exotic quantum symmetries can emerge that govern the excitation spectrum of the system. A symmetry described by the E8 Lie group with a spectrum of eight particles was long predicte...

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Hlavní autoři: Coldea, R, Tennant, D, Wheeler, E, Wawrzynska, E, Prabhakaran, D, Telling, M, Habicht, K, Smeibidl, P, Kiefer, K
Médium: Journal article
Jazyk:English
Vydáno: 2010

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