Abstract
A basic problem in understanding the behavior of a many-electron system is the study of the response of the system when various external fields are applied. The field may vary in space and time in an arbitrary way. A particularly simple case is when the field is a harmonic wave in space and time, characterized by its wave number q and frequency ω. The strength of the external field is usually assumed to be small so that the response is linear. The response of the system to such a field will give important information about the eigenmodes or resonances of the system. These will appear as peaks in the response of the system plotted as a function of the frequency of the probe.
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© 1984 Plenum Press, New York
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Lundqvist, S. (1984). Many-Electron Effects. In: March, N., Tosi, M. (eds) Polymers, Liquid Crystals, and Low-Dimensional Solids. Physics of Solids and Liquids. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2367-9_14
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DOI: https://doi.org/10.1007/978-1-4613-2367-9_14
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4612-9448-1
Online ISBN: 978-1-4613-2367-9
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