13 citations · 33 across the 3 of their papers we have counts for
4 papers
Antiferromagnetic ordering of energy levels for spin ladder with four-spin cyclic exchange: Generalization of the Lieb-Mattis theorem
Tigran Hakobyan
The Lieb-Mattis theorem is generalized to an antiferromagnetic spin-ladder model with four-spin cyclic exchange interaction. We prove that for J>2K, the antiferromagnetic ordering…
Energy-level ordering and ground-state quantum numbers for frustrated two-leg spin-1/2 ladder model
Tigran Hakobyan
The Lieb-Mattis theorem about antiferromagnetic ordering of energy levels on bipartite lattices is generalized to finite-size two-leg spin-1/2 ladder model frustrated by diagonal i…
The ordering of energy levels for SU(n) symmetric antiferromagnetic chains
Tigran Hakobyan
The SU(n) symmetric antiferromagnetic finite chain with the fundamental representation and nearest-neighbor interaction is studied. A partial ordering between the lowest energy lev…
A New Family of Integrable Extended Multi-band Hubbard Hamiltonians
J. Ambjorn, A. Avakyan, T. Hakobyan +1
We consider exactly solvable 1d multi-band fermionic Hamiltonians, which have affine quantum group symmetry for all values of the deformation. The simplest Hamiltonian is a multi-b…