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Encyclopedia of emergent particles in three-dimensional crystals
Zhi-Ming Yu1, Zeying Zhang2, Gui-Bin Liu1
1Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China; Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 100081, China.
Science Bulletin
|December 22, 2022
Summary
Researchers have identified all possible emergent particles in time-reversal-invariant systems, including spinful and spinless types. This comprehensive list guides the creation of novel particles in various physical systems.
Area of Science:
- Condensed matter physics
- Quantum mechanics
- Materials science
Background:
- Recent years have seen increased interest in emergent particles in condensed matter systems.
- Novel particles emerge as excitations around exotic band degeneracy points.
- A complete understanding of all achievable particle types is currently lacking.
Purpose of the Study:
- To systematically identify all possible emergent particles in time-reversal-invariant systems.
- To establish a comprehensive catalog of emergent particles.
- To provide guidance for achieving these particles in physical systems.
Main Methods:
- Systematic symmetry analysis
- Theoretical modeling
- Classification based on symmetry conditions and topological character
Main Results:
- A complete list of all possible emergent particles in time-reversal-invariant systems has been established.
- This includes both spinful particles (e.g., electron quasiparticles) and spinless particles (e.g., phonons).
- Detailed correspondences between particle types, symmetry conditions, effective models, and topological characters have been defined.
Conclusions:
- The search for novel emergent particles is concluded with this comprehensive encyclopedia.
- The findings provide concrete guidance for the experimental realization of emergent particles.
- This work unifies the understanding of emergent phenomena across diverse physical platforms.