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cond-mat2003
Exact two particle spectrum of the Heisenberg-Peierls chain
Julio Abad, J. G. Esteve
The exact solution for the two particle spectrum of the Heisenberg-Peierls one dimensional spin chain is given by working in the fermionic representation. The resulting equations f…
cond-mat1994★ 1 cited
A Perturbative/Variational Approach to Quantum Lattice Hamiltonians
J. G. Esteve, Germán Sierra
We propose a method to construct the ground state of local lattice hamiltonians with the generic form , where is a coupling constant and is a hamiltoni…