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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F14%3A10283743%21RIV15-MSM-11320___
rdf:type
skos:Concept n20:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.1016/j.aop.2014.03.006
dcterms:description
Quantum systems with a finite number of freedom degrees f develop robust singularities in the energy spectrum of excited states as the system's size increases to infinity. We analyze the general form of these singularities for low f, particularly f = 2, clarifying the relation to classical stationary points of the corresponding potential. Signatures in the smoothed energy dependence of the quantum state density and in the flow of energy levels with an arbitrary control parameter are described along with the relevant thermodynamical consequences. The general analysis is illustrated with specific examples of excited-state singularities accompanying the first-order quantum phase transition. (C) 2014 Published by Elsevier Inc. Quantum systems with a finite number of freedom degrees f develop robust singularities in the energy spectrum of excited states as the system's size increases to infinity. We analyze the general form of these singularities for low f, particularly f = 2, clarifying the relation to classical stationary points of the corresponding potential. Signatures in the smoothed energy dependence of the quantum state density and in the flow of energy levels with an arbitrary control parameter are described along with the relevant thermodynamical consequences. The general analysis is illustrated with specific examples of excited-state singularities accompanying the first-order quantum phase transition. (C) 2014 Published by Elsevier Inc.
dcterms:title
Excited-state quantum phase transitions in systems with two degrees of freedom: Level density, level dynamics, thermal properties Excited-state quantum phase transitions in systems with two degrees of freedom: Level density, level dynamics, thermal properties
skos:prefLabel
Excited-state quantum phase transitions in systems with two degrees of freedom: Level density, level dynamics, thermal properties Excited-state quantum phase transitions in systems with two degrees of freedom: Level density, level dynamics, thermal properties
skos:notation
RIV/00216208:11320/14:10283743!RIV15-MSM-11320___
n3:aktivita
n13:P n13:I
n3:aktivity
I, P(GA13-07117S)
n3:cisloPeriodika
neuveden
n3:dodaniDat
n12:2015
n3:domaciTvurceVysledku
n7:9130292 n7:6111858 n7:3783499
n3:druhVysledku
n14:J
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
15687
n3:idVysledku
RIV/00216208:11320/14:10283743
n3:jazykVysledku
n18:eng
n3:klicovaSlova
Thermal anomalies; Level dynamics; Level density; Quantum phase transitions
n3:klicoveSlovo
n8:Thermal%20anomalies n8:Level%20density n8:Level%20dynamics n8:Quantum%20phase%20transitions
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[25DC5C9A0AA5]
n3:nazevZdroje
Annals of Physics
n3:obor
n16:BG
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n11:GA13-07117S
n3:rokUplatneniVysledku
n12:2014
n3:svazekPeriodika
345
n3:tvurceVysledku
Cejnar, Pavel Stránský, Pavel Macek, Michal
n3:wos
000335546400005
s:issn
0003-4916
s:numberOfPages
25
n10:doi
10.1016/j.aop.2014.03.006
n15:organizacniJednotka
11320