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Title: Anomalous monopoles of an interacting boson system
Authors: Wu, B.
Zhang, Q. 
Liu, J.
Keywords: Anomalous monopoles
Interacting boson system
Semiclassical theory
Von Neumann-Wigner theorem
Issue Date: 17-Jan-2011
Citation: Wu, B., Zhang, Q., Liu, J. (2011-01-17). Anomalous monopoles of an interacting boson system. Physics Letters, Section A: General, Atomic and Solid State Physics 375 (3) : 545-548. ScholarBank@NUS Repository.
Abstract: Two anomalous monopoles, one of line shape and the other of disk shape, are found to exist in the semiclassical theory of a two-mode interacting boson system. This is in stark contrast with the quantum theory of this system, where only point-like monopoles exist. We show that these two anomalous monopoles have different origins. The line-shaped monopole is formed from the merging of a series of point-like monopoles while the disk-shaped monopole is the result of the collapsing or bundling of field lines of Berry curvature due to the existence of the influence of the interaction between bosons. The relation of these two anomalous monopoles with the famed von Neumann-Wigner theorem is discussed. © 2010 Elsevier B.V. All rights reserved.
Source Title: Physics Letters, Section A: General, Atomic and Solid State Physics
ISSN: 03759601
DOI: 10.1016/j.physleta.2010.12.030
Appears in Collections:Staff Publications

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