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Theory of spontaneous Fermi surface symmetry breaking for

✍ Scribed by Hiroyuki Yamase; Andrey A. Katanin

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
276 KB
Volume
403
Category
Article
ISSN
0921-4526

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We analyze a forward scattering model on a square lattice, which exhibits spontaneous Fermi surface symmetry breaking with a d-wave order parameter: the Fermi surface expands along the k x -axis and shrinks along the k y -axis or vice versa. While the transition is usually first order as a function

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A b s t r a c t . While for quantum field theoretical calculations it is sufficient to know the Lagrangian, we give here the field equations of the unified gauge-theory of weak and electromagnetic interactions after spontaneous symmetry breaking. With this approach, inhomogeneous Lorentz conditions