2 papers
cond-mat.mes-hall2026
Self-organized Floquet band geometry in cavity-driven quantum materials
Christopher Yang, Gil Refael, Mark S. Rudner +1
Floquet engineering has emerged as a powerful route to dynamically control band structure and topology in quantum materials, but most implementations rely on externally imposed las…
cond-mat.stat-mech2026
Asymptotic freedom, lost: Complex conformal field theory in the two-dimensional nonlinear sigma model and its realization in Heisenberg spin chains
Christopher Yang, Thomas Scaffidi
The two-dimensional nonlinear sigma model (NLSM) is asymptotically free for : it exhibits neither a nontrivial fixed point nor spontaneous symmetry-breaking. Here we sh…