scholarly journals Dynamics of a quantum phase transition in the Aubry-André-Harper model with p -wave superconductivity

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Xianqi Tong ◽  
Ye-Ming Meng ◽  
Xunda Jiang ◽  
Chaohong Lee ◽  
Gentil Dias de Moraes Neto ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Quantum Phase ◽  
P Wave

scholarly journals EMERGENT CPT VIOLATION FROM THE SPLITTING OF FERMI POINTS

2005 ◽  
Vol 20 (13) ◽  
pp. 2795-2812 ◽  
Author(s):  
F. R. KLINKHAMER ◽  
G. E. VOLOVIK
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Particle Physics ◽  
Universality Class ◽  
Quantum Phase ◽  
P Wave ◽  
Cpt Violation ◽  
Wave Channel ◽  
Fermionic Sector ◽  
Chern Simons

In a fermionic quantum vacuum, the parameters kμ of a CPT-violating Chern–Simons-like action term induced by CPT-violating parameters of the fermionic sector depend on the universality class of the system. As a concrete example, we consider the Dirac Hamiltonian of a massive fermionic quasiparticle and add a particular term with purely-spacelike CPT-violating parameters bμ = (0, b). A quantum phase transition separates two phases, one with a fully-gapped fermion spectrum and the other with topologically-protected Fermi points (gap nodes). The emergent Chern–Simons "vector" kμ = (0, k) now consists of two parts. The regular part, k reg , is an analytic function of |b| across the quantum phase transition and may be nonzero due to explicit CPT violation at the fundamental level. The anomalous (nonanalytic) part, k anom , comes solely from the Fermi points and is proportional to their splitting. In the context of condensed-matter physics, the quantum phase transition may occur in the region of the BEC–BCS crossover for Cooper pairing in the p-wave channel. For elementary particle physics, the splitting of Fermi points may lead to neutrino oscillations, even if the total electromagnetic Chern–Simons-like term cancels out.

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

scholarly journals Superfluid–Mott-insulator quantum phase transition of light in a two-mode cavity array with ultrastrong coupling

2017 ◽  
Vol 95 (3) ◽  
Author(s):  
Jingtao Fan ◽  
Yuanwei Zhang ◽  
Lirong Wang ◽  
Feng Mei ◽  
Gang Chen ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Mott Insulator ◽  
Quantum Phase ◽  
Cavity Array

scholarly journals Interplay of quantum phase transition and flat band in hybrid lattices

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Gui-Lei Zhu ◽  
Hamidreza Ramezani ◽  
Clive Emary ◽  
Jin-Hua Gao ◽  
Ying Wu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Quantum Phase ◽  
Flat Band

scholarly journals Dynamics and correlations at a quantum phase transition beyond Kibble-Zurek

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Krishanu Roychowdhury ◽  
Roderich Moessner ◽  
Arnab Das
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Quantum Phase

scholarly journals Collective decay induce quantum phase transition in a well-controlled hybrid quantum system

2021 ◽  
Vol 21 ◽  
pp. 103832
Author(s):  
Dong-Yan Lü ◽  
Guang-Hui Wang ◽  
Yuan Zhou ◽  
Li Xu ◽  
Yong-Jin Hu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum System ◽  
Quantum Phase Transition ◽  
Quantum Phase ◽  
Hybrid Quantum System

scholarly journals Density Wave Probes Cuprate Quantum Phase Transition

2019 ◽  
Vol 9 (2) ◽  
Author(s):  
Tatiana A. Webb ◽  
Michael C. Boyer ◽  
Yi Yin ◽  
Debanjan Chowdhury ◽  
Yang He ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Density Wave ◽  
Quantum Phase
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