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Article
Magnetic order and spin excitations in layered Heisenberg antiferromagnets with compass-model anisotropies
The spin-wave excitation spectrum, magnetization, and Néel temperature for the quasi-two-dimensional spin-1/2 antiferromagnetic Heisenberg model with the compass-model interaction in the plane proposed for iri...
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Article
Leading chiral logarithms for pion form factors to arbitrary number of loops
We develop the method of calculation of the leading chiral (infrared) logarithms to an arbitrary loop order for various form factors of Nambu-Goldstone bosons. The method is illustrated on example of scalar an...