Abstract
Quantum field theory deals with systems possessing a large number of degrees of freedom. This chapter presents a simple model, with which we study the magnetic excitations of a long chain of coupled spins. We show that one can associate the excited states of the system with quasi-particles that propagate along the chain.
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Reference
The experimental data displayed in this chapter were obtained by B. Dorner et al., Z. Phys. B 72, 487 (1988).
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© 2000 Springer-Verlag Berlin Heidelberg
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Basdevant, JL., Dalibard, J. (2000). Magnetic Excitons. In: The Quantum Mechanics Solver. Advanced Texts in Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04277-9_18
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DOI: https://doi.org/10.1007/978-3-662-04277-9_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-04279-3
Online ISBN: 978-3-662-04277-9
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