Fermion condensation: a strange idea successfully explaining behavior of numerous objects in Nature

Details Fermion condensation: a strange idea successfully explaining behavior of numerous objects in Nature Fermion condensation: a strange idea successfully explaining behavior of numerous objects in Nature

2010-02-19

arxiv.org/abs/1002.3719v1

Ukr. J. Phys. 55, 65 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 14 figures, Invited talk at Bogolyubov Kyiv Conference, Modern Problems of Theoretical and Mathematical Physics, 200

Scientific paper

Strongly correlated Fermi systems are among the most intriguing, best experimentally studied and fundamental systems in physics. These are, however, in defiance of theoretical understanding. The ideas based on the concepts like Kondo lattice and involving quantum and thermal fluctuations at a quantum critical point have been used to explain the unusual physics. Alas, being suggested to describe one property, these approaches fail to explain the others. This means a real crisis in theory suggesting that there is a hidden fundamental law of nature, which remains to be recognized. A theory of fermion condensation quantum phase transition, preserving the extended quasiparticles paradigm and intimately related to unlimited growth of the effective mass as a function of temperature, magnetic field etc, is capable to resolve the problem. We discuss the construction of the theory and show that it delivers theoretical explanations of vast majority of experimental results in strongly correlated systems such as heavy-fermion metals and quasi-two-dimensional Fermi systems.

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