Abstract.
The groundbreaking ideas of resonant valence bond (RVB) liquid initiated a transformative shift in modern physics. Extensive implications influenced a broad spectrum of fields, from high-temperature superconductors to quantum computing, and gave birth to key concepts in physics, such as quantum spin liquids, emergent gauge symmetries, topological order, and fractionalisation. Despite extensive efforts to demonstrate the existence of an RVB phase, a definitive realisation has proven elusive. In this talk, I will present a concise, realistic, and elegant solution to this longstanding problem by demonstrating analytically that an RVB spin liquid emerges as the ground state of certain doped Mott insulators. We confirm numerically that this also holds for finite-size systems, finite dopant density, and small exchange interactions. While much attention has been devoted to the emergence of new states from geometrically frustrated interactions, our work demonstrates that kinetic energy frustration in doped Mott insulators may be pivotal to stabilise robust, topologically ordered states in real materials.
(The slides will be available here)