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Varied perturbation theory for the dispersion dip in the two-dimensional Heisenberg quantum antiferromagnet

✍ Scribed by Götz S. Uhrig, Kingshuk Majumdar

Book ID
120962773
Publisher
Springer
Year
2013
Tongue
English
Weight
891 KB
Volume
86
Category
Article
ISSN
1434-6036

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✍ V.I. Belinicher; J. da Providência 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 196 KB

We have developed a consistent theory of the Heisenberg quantum antiferromagnet in the disordered phase with a short range antiferromagnetic order on the basis of the path integral for spin coherent states. In the framework of our approach we have obtained the response function for the spin fluctuat