scholarly journals Evidence for a delocalization quantum phase transition without symmetry breaking in CeCoIn 5

Science ◽  
2022 ◽  
Vol 375 (6576) ◽  
pp. 76-81
Author(s):  
Nikola Maksimovic ◽  
Daniel H. Eilbott ◽  
Tessa Cookmeyer ◽  
Fanghui Wan ◽  
Jan Rusz ◽  
...  
Keyword(s):  
Phase Transition ◽  
Symmetry Breaking ◽  
Quantum Phase Transition ◽  
Quantum Phase

scholarly journals Entanglement Entropy and Quantum Phase Transition in the O(N) σ-model

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Jiunn-Wei Chen ◽  
Shou-Huang Dai ◽  
Jin-Yi Pang
Keyword(s):  
Phase Transition ◽  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Quantum Phase Transition ◽  
Entanglement Entropy ◽  
Quantum Phase ◽  
Leading Order ◽  
Coupling Constant ◽  
Area Law ◽  
Conformal Scalar Field

Abstract We investigate how entanglement entropy behaves in a non-conformal scalar field system with a quantum phase transition, by the replica method. We study the σ-model in 3+1 dimensions which is O(N) symmetric as the mass squared parameter μ2 is positive, and undergoes spontaneous symmetry breaking while μ2 becomes negative. The area law leading divergence of the entanglement entropy is preserved in both of the symmetric and the broken phases. The spontaneous symmetry breaking changes the subleading divergence from log to log squared, due to the cubic interaction on the cone. At the leading order of the coupling constant expansion, the entanglement entropy reaches a cusped maximum at the quantum phase transition point μ2 = 0, and decreases while μ2 is tuned away from 0 into either phase.

scholarly journals Parity-symmetry-breaking quantum phase transition via parametric drive in a cavity magnonic system

2021 ◽  
Vol 104 (6) ◽  
Author(s):  
Guo-Qiang Zhang ◽  
Zhen Chen ◽  
Wei Xiong ◽  
Chi-Hang Lam ◽  
J. Q. You
Keyword(s):  
Phase Transition ◽  
Symmetry Breaking ◽  
Quantum Phase Transition ◽  
Quantum Phase ◽  
Parity Symmetry

scholarly journals Work statistics and symmetry breaking in an excited-state quantum phase transition

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Zakaria Mzaouali ◽  
Ricardo Puebla ◽  
John Goold ◽  
Morad El Baz ◽  
Steve Campbell
Keyword(s):  
Phase Transition ◽  
Excited State ◽  
Symmetry Breaking ◽  
Quantum Phase Transition ◽  
Quantum Phase

scholarly journals Exploring Symmetry Breaking at the Dicke Quantum Phase Transition

2011 ◽  
Vol 107 (14) ◽  
Author(s):  
K. Baumann ◽  
R. Mottl ◽  
F. Brennecke ◽  
T. Esslinger
Keyword(s):  
Phase Transition ◽  
Symmetry Breaking ◽  
Quantum Phase Transition ◽  
Quantum Phase

scholarly journals Reply to “Comment on ‘Quantum phase transition in the four-spin exchange antiferromagnet’ ”

2010 ◽  
Vol 82 (13) ◽  
Author(s):  
Valeri N. Kotov ◽  
D. X. Yao ◽  
A. H. Castro Neto ◽  
D. K. Campbell
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Spin Exchange ◽  
Quantum Phase
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