Abstract
Quantum phase transitions beyond the Landau paradigm are a focal point of condensed matter research, as they challenge conventional classification schemes. A prominent example of such a transition is the bosonic Laughlin state to superfluid transition. Despite several proposed field theories, this transition has evaded both experimental and numerical verification. In this talk, I will present our numerical results using infinite density matrix renormalization group, demonstrating a periodic-potential-driven continuous transition from the bosonic Laughlin state to the superfluid in the half-filled lowest Landau level. The emergence of an $SO(3)$ symmetry at the critical point provides strong evidence for an underlying QED3-Chern-Simons theory. I will also discuss how the insights from this transition can be generalized to other transitions that have recently attracted attention.
Biography
Taige Wang is a Ph.D. candidate in Physics at the University of California, Berkeley, advised by Professor Michael P. Zaletel. He earned his B.S. in Physics from UC San Diego. Taige’s work centers on theoretical condensed matter physics, focusing on correlated many-body systems, topological phases, and tensor network methods, and he actively collaborates with experimentalists to validate theoretical predictions. He has been recognized by awards including the Harvard Quantum Initiative (HQI) Postdoctoral Fellowship, the Kavli Institute for Theoretical Physics (KITP) Graduate Fellowship, and the Shang-keng Ma Memorial Award. His notable contributions include research on the global phase diagram of twisted MoTe2, anomalous Hall crystals in pentalayer graphene, the theory of microwave impedance microscopy (MIM), and wavefunction approaches to higher central charge.
Anyone interested is welcome to attend.