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.
De Anders Sandvik
De Giulia Fardelli
De Andreas Läuchli
De Igor Herbut
De Subir Sachdev
De Christian Voinea
De Max Metliski
De Mykola Dedushenko
De Ruihua Fan
De Francesco Parisen-Toldin
De Zheng Zhou
De Johannes Hofman
De Giulio Biroli
De Giulio Biroli
