Answers are grounded in this paper and cite their sources.
The analytical structure of the wave-number-dependent magnetic susceptibility χ(→k) is studied at small wave number →k and low temperature. It is found to exhibit a nonanalytic behavior in contrast to commonly assumed forms for χ(→k) of interacting systems. The importance and implications of these results are discussed for the cases of short-range point interactions and long-range Coulomb interactions.
No takes yet. Share an insight, caveat, or question.
Geldart et al. (1977) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: