The deconfined quantum critical point (DQCP) exemplifies a phase transition beyond the Landau paradigm, yet its true nature remains debated. We investigate a generalisation of the SO(5) non-linear sigma model with a Wess-Zumino-Witten term—a possible effective description of the DQCP—using the recently proposed fuzzy sphere regularization. This method offers a powerful lens to probe the model’s critical behavior. Employing quantum Monte Carlo simulations of the generalized Sp(N)-symmetric model, we find evidence of conformal symmetry for N ≥ 4 . For N = 2, corresponding to SO(5), our results indicate spontaneous symmetry breaking, consistent with a pseudo-critical regime identified in earlier studies.
By Anders Sandvik
By Giulia Fardelli
By Andreas Läuchli
By Igor Herbut
By Subir Sachdev
By Christian Voinea
By Max Metliski
By Mykola Dedushenko
By Ruihua Fan
By Francesco Parisen-Toldin
By Zheng Zhou
By Johannes Hofman
By Giulio Biroli
By Giulio Biroli
