scholarly journals Thermodynamic singularities in the entanglement entropy at a two-dimensional quantum critical point

2012 ◽  
Vol 86 (7) ◽  
Author(s):  
Rajiv R. P. Singh ◽  
Roger G. Melko ◽  
Jaan Oitmaa
Keyword(s):  
Critical Point ◽  
Entanglement Entropy ◽  
Quantum Critical Point ◽  
Two Dimensional ◽  
Quantum Critical

scholarly journals Two-Dimensional Fluctuations at the Quantum-Critical Point ofCeCu6−xAux

1998 ◽  
Vol 80 (25) ◽  
pp. 5627-5630 ◽  
Author(s):  
O. Stockert ◽  
H. v. Löhneysen ◽  
A. Rosch ◽  
N. Pyka ◽  
M. Loewenhaupt
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Two Dimensional ◽  
Quantum Critical

CLASSICAL BEHAVIOR OF TWO-DIMENSIONAL LIQUID 3He NEAR A QUANTUM CRITICAL POINT

2013 ◽  
Vol 27 (29) ◽  
pp. 1347005
Author(s):  
J. W. CLARK ◽  
V. A. KHODEL ◽  
M. V. ZVEREV
Keyword(s):  
Critical Point ◽  
Fermi Liquid ◽  
Quantum Critical Point ◽  
Strongly Correlated ◽  
Two Dimensional ◽  
Intrinsic Properties ◽  
Zero Sound ◽  
Density Region ◽  
Classical Behavior ◽  
Quantum Critical

Non-Fermi-liquid (NFL) behavior of the specific heat C(T) of two-dimensional (2D) liquid 3 He , first uncovered in measurements almost 20 years ago, is explained in terms of intrinsic properties of this system that emerge when its density rises and the liquid becomes strongly correlated. The occurrence of a T-independent β term in C(T) is attributed to satisfaction of the conditions for Dulong–Petit behavior by the boson part of the free energy. This unexpected classicality stems from softening of the transverse zero-sound mode (TZSM) in the density region where the anomaly in C(T), associated with a quantum critical point (QCP), is observed.

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