scholarly journals Phase Diagram and Critical Exponents of a Dissipative Ising Spin Chain in a Transverse Magnetic Field

2005 ◽  
Vol 94 (4) ◽  
Author(s):  
Philipp Werner ◽  
Klaus Völker ◽  
Matthias Troyer ◽  
Sudip Chakravarty
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Transverse Magnetic Field ◽  
Critical Exponents ◽  
Spin Chain ◽  
Transverse Magnetic ◽  
Ising Spin

THERMAL ENHANCEMENT OF ENTANGLEMENT SENSITIVITY TO THE PHASE DIAGRAM IN XY MODEL

2008 ◽  
Vol 06 (supp01) ◽  
pp. 751-757
Author(s):  
YOSHIFUMI NAKATA ◽  
DAMIAN MARKHAM ◽  
MIO MURAO
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Transverse Magnetic Field ◽  
Thermal State ◽  
Transverse Magnetic ◽  
Threshold Temperature ◽  
Xy Model ◽  
Zero Temperature ◽  
Characteristic Lines ◽  
Thermal Enhancement

To understand multi-partite entanglement of the thermal state in the 1D spin 1/2 XY model with a transverse magnetic field, we investigate the temperature below which the thermal state is certainly entangled. We refer to such a temperature as a threshold temperature. We show that two characteristic lines in the phase diagram at zero temperature of the XY model can be clearly emphasized by the threshold temperature.

scholarly journals Ising spin glass in a transverse magnetic field

1994 ◽  
Vol 49 (9) ◽  
pp. 6404-6407 ◽  
Author(s):  
Beatriz Boechat ◽  
Raimundo R. dos Santos ◽  
M. A. Continentino
Keyword(s):  
Magnetic Field ◽  
Spin Glass ◽  
Transverse Magnetic Field ◽  
Transverse Magnetic ◽  
Ising Spin Glass ◽  
Ising Spin
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