Chenyuan
Li
Rice University
Strange metal behavior has been observed in most high temperature superconductors, yet its relationship to unconventional superconductivity remains elusive. In the first part of this talk, I will address this problem using the two-dimensional Yukawa-Sachdev-Ye-Kitaev (2D-YSYK) model, which provides a universal theory of strange metals from spatially random interactions [1]. I will present full numerical solutions of a self-consistent disorder averaged analysis of the 2D-YSYK model. The results reproduce key aspects of observations in the cuprates. Motivated by the recent discovery of superconductivity in twisted bilayer WSe₂, I then turn to this highly tunable moiré platform. I will present our recent progress on the underlying correlation physics based on the notion of topology-induced quantum fluctuations in twisted WSe₂ [2,3]. We identify the possible superconducting pairing channels through symmetry-based classification and energetic analysis, which highlight the natural emergence of topological superconductivity in this system.
In the second part of the seminar, I will outline my long-term vision for developing a research group in quantum modeling within the EUCENTRAL framework. The goal is to advance our understanding of non-equilibrium quantum many-body systems with long-ranged interactions through advanced computational tools. My approach to research software development and maintenance will also be discussed.
[1] C. Li et al., “Strange metal and superconductor in the two-dimensional Yukawa-Sachdev-Ye Kitaev model”, Phys. Rev. Lett. 133, 186502 (2024)
[2] F. Xie, C. Li, et al., Kondo-lattice phenomenology of twisted bilayer WSe₂from compact molecular orbitals of topological bands. arXiv:2503.21769.
https://us06web.zoom.us/j/83563474461?pwd=bkUYfdnNA2fxkmgqSF3h5QJQS33FDe.1
