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2017

Revisiting the dilatation operator of the Wilson-Fisher fixed point

Liendo, Pedro

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We revisit the order $\varepsilon$ dilatation operator of the Wilson-Fisher fixed point obtained by Kehrein, Pismak, and Wegner in light of recent results in conformal field theory.

Our approach is algebraic and based only on symmetry principles.
The starting point of our analysis is that the first correction to the dilatation operator is a conformal invariant, which implies that its form is fixed up to an infinite set of coefficients associated with the scaling dimensions of higher-spin currents.
These coefficients can be fixed using well-known perturbative results, however, they were recently re-obtained using CFT arguments without relying on perturbation theory.

Revisiting the dilatation operator of the Wilson-Fisher fixed point · Around

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