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Showing 1 to 3 of 3 for “"pomeranchuk instability"”.
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Electromagnetic response of time-reversal breaking metallic phases in two dimensions
… the critical point we have is similar to that of Pomeranchuk instability. The quartic term in the dispersion expansion needed to be introduced to stabilize the theory. The correction coming from the higher order terms introduces the coupling to the curvature of the Fermi surfaces. The beta phase …
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Instabilitäten und spontane Symmetriebrechung in zweidimensionalen Fermisystemen
… suitably chosen parameters) the occurrence of a Pomeranchuk instability of the two-dimensional Hubbard model with nonvanishing next nearest neighbour hopping, which should give rise to a ground state that spontaneously breaks the model's lattice symmetry as well as its U(1) symmetry, i.e. the …
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Non-perturbative approaches to strongly correlated electron systems
"Strong electron correlation phenomena are ubiquitous, such as unconventional superconductivity and the metal-insulator transitions. Having a proper understanding of strongly correlated electron systems requires a non-perturbative analysis because Fermi liquid theory inevitably breaks down due to …