63 citations · 773 across the 58 of their papers we have counts for
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Systematic Low-Energy Effective Field Theory for Magnons and Holes in an Antiferromagnet on the Honeycomb Lattice
F. Kämpfer, B. Bessire, M. Wirz +3
Based on a symmetry analysis of the microscopic Hubbard and t-J models, a systematic low-energy effective field theory is constructed for hole-doped antiferromagnets on the honeyco…
Dynamical Mass Generation and Confinement in Maxwell-Chern-Simons Planar Quantum Electrodynamics
Saúl Sánchez Madrigal, Christoph P. Hofmann, Alfredo Raya
We study the non-perturbative phenomena of Dynamical Mass Generation and Confinement by truncating at the non-perturbative level the Schwinger-Dyson equations in Maxwell-Chern-Simo…
Spontaneous Magnetization of an Ideal Ferromagnet: Beyond Dyson's Analysis
Christoph P. Hofmann
Using the low-energy effective field theory for magnons, we systematically evaluate the partition function of the O(3) ferromagnet up to three loops. Dyson, in his pioneering micro…
Constraint Effective Potential of the Magnetization in the Quantum XY Model
U. Gerber, C. P. Hofmann, F. -J. Jiang +3
Using an improved estimator in the loop-cluster algorithm, we investigate the constraint effective potential of the magnetization in the spin quantum XY model. The n…
Antiferromagnets at low Temperatures
Christoph P. Hofmann
The low-temperature properties of the Heisenberg antiferromagnet in 2+1 space-time dimensions are analyzed within the framework of effective Lagrangians. It is shown that the magno…