XY model on the circle: Diagonalization, spectrum, and forerunners of the quantum phase transition

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 80, Issue 3, 2009, Pages

  De Pasquale, Antonella ^a,b,c   Facchi, Paolo ^a,b  

^a UNIVERSITY OF BARI   (Italy)

^b INFN SEZIONE DI BARI   (Italy)

^c UNIVERSITY OF NAPLES FEDERICO II   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

BOGOLIUBOV; DIAGONALIZATIONS; DISPERSION RELATIONS; FINITE-SIZE SYSTEMS; GROUND-STATE ENERGIES; LEVEL CROSSING; LOGARITHMIC RATES; PERIODIC BOUNDARY CONDITIONS; QUANTUM PHASE TRANSITIONS; THERMODYNAMIC LIMITS; VACUUM STATE; X-Y MODEL;

FERMIONS; GAGES; GROUND STATE;

PHASE TRANSITIONS;

EID: 69849084549     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.80.032102     Document Type: Article

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