scholarly journals Regularity and chaos at critical points of first-order quantum phase transitions

2011 ◽  
Vol 84 (4) ◽  
Author(s):  
M. Macek ◽  
A. Leviatan
Keyword(s):  
Phase Transitions ◽  
Critical Points ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
First Order

scholarly journals Weak First-Order Superfluid-Solid Quantum Phase Transitions

2004 ◽  
Vol 93 (23) ◽  
Author(s):  
Anatoly Kuklov ◽  
Nikolay Prokof'ev ◽  
Boris Svistunov
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
First Order

scholarly journals CUMULATIVE MEASURE OF CORRELATION FOR MULTIPARTITE QUANTUM STATES

2014 ◽  
Vol 28 (07) ◽  
pp. 1450050 ◽  
Author(s):  
ANDRÉ L. FONSECA DE OLIVEIRA ◽  
EFRAIN BUKSMAN ◽  
JESÚS GARCÍA LÓPEZ DE LACALLE
Keyword(s):  
Phase Transitions ◽  
State Space ◽  
Present Article ◽  
Critical Points ◽  
Quantum Phase Transitions ◽  
The State ◽  
Quantum States ◽  
Quantum Phase ◽  
Mixed States ◽  
Different Dimensions

The present article proposes a measure of correlation for multiqubit mixed states. The measure is defined recursively, accumulating the correlation of the subspaces, making it simple to calculate without the use of regression. Unlike usual measures, the proposed measure is continuous additive and reflects the dimensionality of the state space, allowing to compare states with different dimensions. Examples show that the measure can signal critical points (CPs) in the analysis of Quantum Phase Transitions (QPTs) in Heisenberg models.

QUANTUM PHASE TRANSITIONS IN MESOSCOPIC SYSTEMS

2006 ◽  
Vol 20 (19) ◽  
pp. 2687-2694 ◽  
Author(s):  
F. IACHELLO
Keyword(s):  
Phase Transitions ◽  
Critical Points ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Mesoscopic Systems ◽  
Spectral Signatures

Shape phase transitions in nuclei, an example of quantum phase transitions in mesoscopic systems, are briefly reviewed. Spectral signatures of critical points in finite quantal systems are discussed and experimental examples are shown.

scholarly journals First-order quantum phase transitions

2007 ◽  
Vol 310 (2) ◽  
pp. 828-834 ◽  
Author(s):  
M.A. Continentino ◽  
A.S. Ferreira
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
First Order
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