Exact value of the ground state energy of the linear antiferromagnetic Heisenberg chain with nearest and next-nearest neighbour interactions

Broek van den, P.M. (1980) Exact value of the ground state energy of the linear antiferromagnetic Heisenberg chain with nearest and next-nearest neighbour interactions. Physics Letters A, 77 (4). pp. 261-262. ISSN 0375-9601

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Abstract:	It is shown that the ground state energy of the hamiltonian H = Σ Si · Si+1 + γΣSi · Si+2 for the linear antiferromagnetic Heisenberg chain with nearest and next-nearest neighbour interactions is equal to -3/2 if γ = 1/2.
Item Type:	Article
Copyright:	© 1980 Elsevier Science
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Software Engineering (SE)
Link to this item:	http://purl.utwente.nl/publications/64077
Official URL:	http://dx.doi.org/10.1016/0375-9601(80)90662-3
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