Condensed-Matter Seminar

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  • Jacopo Viti

    Thu, 23/01/2020 - 12:00 to 13:00

    Emptiness Formation Probability and the Painleve` V equation

    Abstract: The Emptiness Formation Probability is the probability of finding L consecutive down spins in the ground state of a spin 1/2 chain.
    It represents perhaps the simplest correlator that can be calculated in a quantum spin chain. I will discuss this quantity in the XY spin chain, including the best-known example of the Ising spin chain in transverse field. It is shown, in particular,  that in the scaling limit, the Emptiness Formation Probability is the tau-function of a Painleve` V equation.
  • Ella Orion Lachman

    Thu, 30/01/2020 - 12:00 to 13:00

    Exchange biased anomalous Hall effect driven by frustration in a magnetic kagome lattice