Aaram J. Kim

Abstract Recent advances in ultrafast pump-probe spectroscopy provide access to hidden phases of correlated matter, including light-induced superconducting states. The theoretical understanding of these nonequilibrium phases remains limited, particularly for correlated materials on frustrated lattices. Here we demonstrate that photodoping can induce a new type of chiral superconducting phase in frustrated Mott insulators by forming a condensate of doublons and holons.

Abstract We propose a diagrammatic Monte Carlo approach for quantum impurity models, which can be regarded as a generalization of the strong-coupling expansion for fermionic impurity models. The algorithm is based on a self-consistently computed three-point vertex and a stochastically sampled four-point vertex, and it allows one to obtain numerically exact results in a wide parameter regime.