Simple, empirical order parameter for a first order quantum phase transition in atomic nuclei

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dc.creatorBonatsos, Dennis
dc.creatorMcCutchan, E. A.
dc.creatorCasten, R. F.
dc.creatorCasperson, R. J.
dc.date2008-07-28
dc.date.accessioned2026-07-07T11:45:07Z
dc.date.available2026-07-07T11:45:07Z
dc.descriptionA simple, empirical signature of a first order phase transition in atomic nuclei is presented, the ratio of the energy of the 6+ level of the ground state band to the energy of the first excited 0+ state. This ratio provides an effective order parameter which is not only easy to measure, but also distinguishes between first and second order phase transitions and takes on a special value in the critical region. Data in the Nd-Dy region show these characteristics. In addition, a repeating degeneracy between alternate yrast states and successive excited 0+ states is found to correspond closely to the line of a first order phase transition in the framework of the Interacting Boson Approximation (IBA) model in the large N limit, pointing to a possible underlying symmetry in the critical region.
dc.description4 pages, 4 postscript figures, uses revTeX
dc.identifierhttps://arxiv.org/abs/0807.4388
dc.identifierhttp://arxiv.org/abs/0807.4388
dc.identifierPhys.Rev.Lett.100:142501,2008
dc.identifierdoi:10.1103/PhysRevLett.100.142501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201782
dc.subjectNuclear Theory
dc.titleSimple, empirical order parameter for a first order quantum phase transition in atomic nuclei
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