Momentum space topology and quantum phase transitions

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dc.creatorVolovik, G. E.
dc.date2005-05-04
dc.date2006-01-07
dc.date.accessioned2026-07-07T10:44:00Z
dc.date.available2026-07-07T10:44:00Z
dc.descriptionMany quantum condensed-matter systems, and probably the quantum vacuum of our Universe, are strongly correlated and strongly interacting fermionic systems, which cannot be treated perturbatively. However, physics which emerges in the low-energy does not depend on the complicated details of the system and is relatively simple. It is determined by the nodes in the fermionic spectrum, which are protected by topology in momentum space (in some cases, in combination with the vacuum symmetry). Here we illustrate this universality on some examples of quantum phase transitions, which can occur between the vacua with the same symmetry but with diferent topology in momentum space. The quantum phase transitions between the fully gapped states with different momentum-space topology are also discussed.
dc.description55 pages, 13 figures, extended and references added
dc.identifierhttps://arxiv.org/abs/cond-mat/0505089
dc.identifierhttp://arxiv.org/abs/cond-mat/0505089
dc.identifierActaPhys.Slov.56:049-056,2006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182443
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectQuantum Physics
dc.titleMomentum space topology and quantum phase transitions
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