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Title:

Exact excited states of nonintegrable models

Document type:
Zeitschriftenaufsatz
Author(s):
Moudgalya, Sanjay; Rachel, Stephan; Bernevig, B. Andrei; Regnault, Nicolas
Abstract:
We discuss a method of numerically identifying exact energy eigenstates for a finite system, whose form can then be obtained analytically. We demonstrate our method by identifying and deriving exact analytic expressions for several excited states, including an infinite tower, of the one-dimensional spin-1 Affleck-Kennedy-Lieb-Tasaki (AKLT) model, a celebrated nonintegrable model. The states thus obtained for the AKLT model can be interpreted as from one to an extensive number of quasiparticles o...     »
Journal title:
Physical Review B 2018-12
Year:
2018
Journal volume:
98
Journal issue:
23
Fulltext / DOI:
doi:10.1103/physrevb.98.235155
Publisher:
American Physical Society (APS)
E-ISSN:
2469-99502469-9969
Date of publication:
27.12.2018
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