Journal article
Integrable supersymmetric chain without particle conservation
Jan de Gier, Gyorgy Z Feher, Bernard Nienhuis, Magdalena Rusaczonek
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT | IOP PUBLISHING LTD | Published : 2016
Abstract
We introduce a new integrable supersymmetric lattice chain which violates fermion conservation and exhibits fermion-hole symmetry. The model displays exponential degeneracy in every eigenstate including the ground state. This degeneracy is expressed in the possibility to create any number of zero modes reminiscent of Cooper pairs.
Grants
Funding Acknowledgements
We are grateful for financial support from the Australian Research Council (ARC), the ARC Centre of Excellence for Mathematical and Statistical Frontiers (ACEMS), and the Koninklijke Nederlandse Academie voor de Wetenschap (KNAW). JdG thanks the hospitality of the Galileo Galilei Institute in Florence where part of this work was finalised. We further warmly thank Lisa Huijse, Jon Links and Kareljan Schoutens for discussions.