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A Unified Theory of Non-Linear Electrodynamics and Gravity
Unified Theory Non-Linear Electrodynamics Gravity
2010/12/20
We describe a class of unified theories of electromagnetism and gravity. The Lagrangian is of the BF type, with a potential for the B-field, the gauge group is U(2) (complexified).
A Theoretical Model for the Non-linear Susceptibility of the Antiferromagnetic Systems
Antiferromagnetism AC -- Susceptibility
2010/4/15
In this study, we have developed a general theoretical model, based upon the simple mean field model of N\'{e}el, for the non-linear response of an antiferromagnetic system. The results indicate that ...