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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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2010-01, Vol.327 (5962), p.177-180
Hauptverfasser:	Coldea, R, Tennant, D.A, Wheeler, E.M, Wawrzynska, E, Prabhakaran, D, Telling, M, Habicht, K, Smeibidl, P, Kiefer, K
Format:	Artikel
Sprache:	eng
Schlagworte:	Classical and quantum physics: mechanics and fields Correlations Critical points Energy Exact sciences and technology Golden mean Lie groups Magnetic fields Particle physics Phase transitions Physics Quantum physics Quasiparticles Spin dynamics
Online-Zugang:	Volltext
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