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5 papers · 2 filters
The missing label problem and the analytical Bethe ansatz
Nicolas Crampe, Dounia Shaaban Kabakibo, Luc Vinet
The missing label for basis vectors of representations corresponding to the reduction can be provided by the eigenvalues of scalars in the env…
Freidel-Maillet type presentations of
Pascal Baseilhac
A unified framework for the Chevalley and equitable presentation of is introduced. It is given in terms of a system of Freidel-Maillet type equations satisfied by a pai…
Overlap between usual and modified Bethe vectors
S. Belliard, N. A. Slavnov
We consider the overlap of Bethe vectors of the XXX spin chain with a diagonal twist and the modified Bethe vectors with a general twist. We find a determinant representation for t…
Entanglement of Free Fermions on Johnson Graphs
Pierre-Antoine Bernard, Nicolas Crampe, Luc Vinet
Free fermions on Johnson graphs are considered and the entanglement entropy of sets of neighborhoods is computed. For a subsystem composed of a single neighborhood, an ana…
Accessory parameters in confluent Heun equations and classical irregular conformal blocks
O. Lisovyy, A. Naidiuk
Classical Virasoro conformal blocks are believed to be directly related to accessory parameters of Floquet type in the Heun equation and some of its confluent versions. We extend t…