Coulomb analogy for nonhermitian degeneracies near quantum phase transitions

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dc.creatorCejnar, P.
dc.creatorHeinze, S.
dc.creatorMacek, M.
dc.date2007-07-17
dc.date.accessioned2026-07-07T11:44:45Z
dc.date.available2026-07-07T11:44:45Z
dc.descriptionDegeneracies near the real axis in a complex-extended parameter space of a hermitian Hamiltonian are studied. We present a method to measure distributions of such degeneracies on the Riemann sheet of a selected level and apply it in classification of quantum phase transitions. The degeneracies are shown to behave similarly as complex zeros of a partition function.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/0707.2473
dc.identifierhttp://arxiv.org/abs/0707.2473
dc.identifierPhys.Rev.Lett.99:100601,2007
dc.identifierdoi:10.1103/PhysRevLett.99.100601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201665
dc.subjectQuantum Physics
dc.subjectMathematical Physics
dc.subjectNuclear Theory
dc.titleCoulomb analogy for nonhermitian degeneracies near quantum phase transitions
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