ar X iv : c on d - m at / 9 51 10 87 v 2 1 8 N ov 1 99 5 The incoherent part of the spin - wave polarization operator in the t - J model
نویسنده
چکیده
A calculation of the spin-wave polarization operator is very important for the analysis of the magnetic structure of high temperature superconductors. We analyze the significance of the incoherent part of the spin-wave polarization operator within the framework of the t-J model. This part is calculated analytically for small doping with logarithmic accuracy. We conclude that the incoherent part of the spin-wave polarization operator is negligible in comparison with the coherent part. keywords: antiferromagnetic order, spin fluctuations.
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