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cond-mat.quant-gas2026
Topological Pseudo-Goldstone Modes from Weakly Broken Dipole Conservation
Yan-Guang Yue, Jie Lou, Yan Chen
Weakly breaking a continuous symmetry in an ordered phase can convert its Goldstone modes into topological collective bands. We establish this mechanism in a neutral dipole condens…
cond-mat.str-el2026
Studying line defect at Deconfined Quantum Criticality via fuzzy sphere regularization
Shutao Liu, Shuai Yang, Jie Lou +1
The interplay between bulk critical fluctuations and nontrivial topology can enrich defect physics and give rise to novel defect universality classes. Understanding the fate of suc…
cond-mat.str-el2026
Winding-Sector Transitions and Thermodynamic Incommensurability in Helical Valence Bond Phase under Tilted Boundary Conditions
Yan Liu, Jie Lou, Yan Chen
We investigate the ground states of the staircase - model in the maximally anisotropic limit by employing projector quantum Monte Carlo simulations. To overcome b…