3 papers
cond-mat.str-el2026
Critical SO(5) scaling of entanglement entropy at honeycomb lattice deconfined criticality
Sankalp Kumar, Jonathan D'Emidio, Sumiran Pujari
The deconfined quantum critical point (DQCP) in square lattice S=1/2 quantum antiferromagnets has been extensively studied with a large body of evidence pointing to a weakly first-…
cond-mat.str-el2025
Pseudocriticality in antiferromagnetic spin chains
Sankalp Kumar, Sumiran Pujari, Jonathan D'Emidio
Weak first-order pseudocriticality with approximate scale invariance has been observed in a variety of settings, including the intriguing case of deconfined criticality in 2+1 dime…
cond-mat.str-el2024
Entanglement entropy and deconfined criticality: emergent SO(5) symmetry and proper lattice bipartition
Jonathan D'Emidio, Anders W. Sandvik
We study the Rényi entanglement entropy (EE) of the two-dimensional - model, the emblematic quantum spin model of deconfined criticality at the phase transition between anti…