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## Haldane relation for interacting dimersAdd to your list(s) Download to your calendar using vCal - Alessandro Giuliani (Rome 3)
- Tuesday 10 October 2017, 16:15-17:15
- MR12, CMS, Wilberforce Road, Cambridge, CB3 0WB.
If you have a question about this talk, please contact Perla Sousi. In this talk I will review some recent results on the existence and nature of the scaling limit of interacting, close-packed, dimers on the two-dimensional square lattice. By constructive Renormalization Group techniques, we compute: the multipoint dimer correlations, which display non-trivial critical exponents, continuously varying with the interaction strength; and the height fluctuations, which, after proper coarse graining and rescaling, converge to the massless Gaussian field with a suitable interaction-dependent pre-factor (`amplitude’). We also prove the identity between the critical exponent of the two-point dimer correlation and the amplitude of this massless Gaussian field. This identity is the restatement, in the context of interacting dimers, of one of the Haldane universality relations, part of his Luttinger liquid conjecture, originally formulated in the context of one-dimensional interacting Fermi systems. Its proof requires the combined use of an exact lattice Ward Identity for the lattice theory, with the chiral Ward Identites of a continuum reference model, which describes the infrared fixed point of the interacting theory. Joint work with V. Mastropietro and F. Toninelli. This talk is part of the Probability series. ## This talk is included in these lists:- All CMS events
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