Phase transformations (Statistical physicsWe give a general introduction to quantum phase transitions in strongly correlated electron systems. These transitions, which occur at zero temperature when a non-thermal parameter g such as the pressure, chemical concentration or magnetic field is tuned to a ...
Quantum Phase Transitions of Light for Two-level Atoms Soi-Chan Lei and Ray-Kuang Lee Q uantum phase transition (QP ) can only be accessed at near- absolute-zero temperatures by changing an external parameter or a coupling constant driven by quantum fluctua- tions. 1 Tere have be...
Quantum-phase transitions are exam- ined at zero temperature, focusing on the roles of the particle-hole pairs. The system is transformed into two three-dimensional (3D) systems of classical vortex loops, which are topologically coupled but otherwise indepen- dent of each other. The resulting ...
Quantum phase transitions in heavy fermion metals and Kondo insulators. Phys. Status Solidi B 250, 425–438 (2013). ADS Google Scholar Kirchner, S. et al. Colloquium: Heavy-electron quantum criticality and single-particle spectroscopy. Rev. Mod. Phys. 92, 011002 (2020). ADS Google Scholar...
For a system at a temperature of absolute zero, all thermal fluctuations are frozen out, while quantum fluctuations prevail. These microscopic quantum fluctuations can induce a macroscopic phase transition in the ground state of a many-body system when t
Fluctuations near second-order quantum phase transitions in d-wave superconductors can cause strong damping of fermionic excitations, as observed in photoemission experiments. The damping of the gapless nodal quasiparticles can arise naturally in the qua
内容提示: QUANTUM GASESObservation of a superradiant quantum phasetransition in an intracavity degenerate Fermi gasXiaotian Zhang 1 , Yu Chen 2 , Zemao Wu 1 , Juan Wang 1 , Jijie Fan 1 , Shujin Deng 1 , Haibin Wu 1,3,4 *Coupling Bose-Einstein condensates to optical cavities has enabled...
In this article, we are going to present a pedagogical review of basic properties of Ising and Heisenberg models. Using these properties, we shall study basic properties of the quantum phase transition in 1D Ising model and follow it with an analogous st
More recently, the ground state QPT concept has been extended to encompass excited states, with the introduction of excited state quantum phase transitions (ESQPTs). ESQPTs are characterized by a singularity in the energy spectrum due to the clustering of excited levels at a certain critical energ...
Gernot SchallerfromDresden University of Technologyreveal the similarity between adiabatic quantum algorithms and quantum phase transitions. They found that the Grover algorithm was corresponding to the first order of quantum phase transitions. They found that the second or higher order transitions were ...