scholarly journals Universal crossovers and critical dynamics of quantum phase transitions: A renormalization group study of the pseudogap Kondo problem

2006 ◽  
Vol 74 (14) ◽  
Author(s):  
Lars Fritz ◽  
Serge Florens ◽  
Matthias Vojta
Keyword(s):  
Renormalization Group ◽  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Critical Dynamics ◽  
Kondo Problem

scholarly journals Quantum phase transitions in a resonant-level model with dissipation: Renormalization-group studies

2007 ◽  
Vol 76 (23) ◽  
Author(s):  
Chung-Hou Chung ◽  
Matthew T. Glossop ◽  
Lars Fritz ◽  
Marijana Kirćan ◽  
Kevin Ingersent ◽  
...  
Keyword(s):  
Renormalization Group ◽  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Resonant Level ◽  
Level Model

scholarly journals Quantum critical dynamics in a spinor Hubbard model quantum simulator

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Jared O. Austin ◽  
Zihe Chen ◽  
Zachary N. Shaw ◽  
Khan W. Mahmud ◽  
Yingmei Liu
Keyword(s):  
Phase Transitions ◽  
Hubbard Model ◽  
Quantum Phase Transitions ◽  
Three Dimensional ◽  
Quantum Phase ◽  
Critical Dynamics ◽  
Scaling Effects ◽  
Many Body ◽  
Quantum Simulator ◽  
Quantum Critical

AbstractThree-dimensional (3D) strongly correlated many-body systems, especially their dynamics across quantum phase transitions, are prohibitively difficult to be numerically simulated. We experimentally demonstrate that such complex many-body dynamics can be efficiently studied in a 3D spinor Bose–Hubbard model quantum simulator, consisting of antiferromagnetic spinor Bose–Einstein condensates confined in cubic optical lattices. We find dynamics and scaling effects beyond the scope of existing theories at superfluid–insulator quantum phase transitions, and highlight spin populations as a good observable to probe the quantum critical dynamics. Our data indicate that the scaling exponents are independent of the nature of the quantum phase transitions. We also conduct numerical simulations in lower dimensions using time-dependent Gutzwiller approximations, which qualitatively describe our observations.

scholarly journals Phase separation and suppression of critical dynamics at quantum phase transitions of MnSi and (Sr1−xCax)RuO3

2006 ◽  
Vol 3 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Y. J. Uemura ◽  
T. Goko ◽  
I. M. Gat-Malureanu ◽  
J. P. Carlo ◽  
P. L. Russo ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Phase Separation ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Critical Dynamics

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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