scholarly journals Symmetries at and Near Critical Points of Quantum Phase Transitions in Nuclei

2009 ◽  
Author(s):  
A. Leviatan ◽  
F. Iachello ◽  
Jan Jolie ◽  
Andreas Zilges ◽  
Nigel Warr ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Critical Points ◽  
Quantum Phase Transitions ◽  
Quantum Phase

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.

RIGOROUS RESULTS FOR THE QUANTUM PHASE TRANSITIONS IN A DIMERIZED S = 1 ISING LATTICE

2007 ◽  
Vol 22 (07n10) ◽  
pp. 727-731 ◽  
Author(s):  
HAINA WU ◽  
ZHIHUA YANG ◽  
JIANHUI DAI ◽  
HEPING YING
Keyword(s):  
Phase Transitions ◽  
Critical Points ◽  
Ground State ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Ising Chain ◽  
Ising Lattice ◽  
Rigorous Results ◽  
Crystal Fields ◽  
Transverse Fields

We examine the ground state properties of a dimerized ferromagnetic S = 1 Ising chain with single-ion crystal fields by mapping the model onto the dimerized S = 1/2 Ising chain with transverse fields. We show that the system exhibits a series of Ising transitions depending on the dimerization strength of the crystal fields, while the critical points can be determined exactly.

Quantum phase transitions

2004 ◽  
Vol 174 (8) ◽  
pp. 853 ◽  
Author(s):  
Sergei M. Stishov
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase

scholarly journals Magnetic Field- and Pressure-Induced Quantum Phase Transitions in NH4CuCl3

2005 ◽  
Vol 159 ◽  
pp. 241-245 ◽  
Author(s):  
Masashi Fujisawa ◽  
Budhy Kurniawan ◽  
Toshio Ono ◽  
Hidekazu Tanaka
Keyword(s):  
Magnetic Field ◽  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase
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