期刊
JETP LETTERS
卷 80, 期 5, 页码 343-347出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/1.1825119
关键词
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We discuss the quantum phase transition that separates a vacuum state with fully gapped fermion spectrum from a vacuum state with topologically protected Fermi points (gap nodes). In the context of condensed-matter physics, such a quantum phase transition with Fermi point splitting may occur for a system of ultracold fermionic atoms in the region of BEC-BCS crossover, provided Cooper pairing occurs in the non-s-wave channel. For elementary particle physics, the splitting of Fermi points may lead to CPT violation, neutrino oscillations, and other phenomena. (C) 2004 MAIK Nauka / Interperiodica.
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