Page 3: Research news on Symmetries in condensed matter

In condensed matter physics, analysis of symmetries is a fundamental theoretical technique used to classify phases of matter, constrain effective Hamiltonians, and predict emergent phenomena independent of microscopic details. By identifying spatial (lattice, point-group, translational), internal (spin, gauge), and spacetime (time-reversal) symmetries and how they are represented on fields or quasiparticles, one can determine allowed terms in Ginzburg–Landau functionals, low-energy effective field theories, and band structures. Symmetry considerations underlie methods such as group-theoretical classification of order parameters, symmetry-based selection rules, topological band theory, and the systematic construction of symmetry-protected and symmetry-enriched phases in crystalline and strongly correlated systems.

AI model accelerates defect-based material design

Across the physical world, many intricate structures form via symmetry breaking. When a system with inherent symmetry transitions into an ordered state, it can form stable imperfections known as topological defects. Such ...

Detecting the hidden magnetism of altermagnets

Altermagnets are a newly recognized class of antiferromagnets whose magnetic structure behaves very differently from what is found in conventional systems. In conventional antiferromagnets, the sublattices are linked by simple ...

page 3 from 5