In condensed matter physics, the Laughlin wavefunction[1][2] is an ansatz, proposed by Robert Laughlin for the ground state of a two-dimensional electron gas placed in a uniform background magnetic field in the presence of a uniform jellium background when the filling factor of the lowest Landau level is where is an odd positive integer. It was constructed to explain the observation of the fractional quantum Hall effect (FQHE), and predicted the existence of additional states as well as quasiparticle excitations with fractional electric charge , both of which were later experimentally observed. Laughlin received one third of the Nobel Prize in Physics in 1998 for this discovery.
^Laughlin, R. B. (2 May 1983). "Anomalous Quantum Hall Effect: An Incompressible Quantum Fluid with Fractionally Charged Excitations". Physical Review Letters. 50 (18). American Physical Society (APS): 1395–1398. Bibcode:1983PhRvL..50.1395L. doi:10.1103/physrevlett.50.1395. ISSN 0031-9007.
^Z. F. Ezewa (2008). Quantum Hall Effects, Second Edition. World Scientific. ISBN 978-981-270-032-2. pp. 210-213
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