pith. sign in

It is convenient to ignore all termsO(t itj) since they do not contribute to Γ (V) (as we havet 1 =t 2 = 0 at our fixed point)

For the beta functions oft 1 andt 2 one may look at the one-point functions of the two bulk operators Φ2 i −trace, Φi P i Φ−trace, demand their finiteness

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Ising surface defects can get dirty

hep-th · 2026-05-21 · unverdicted · novelty 7.0

In the 4-ε expansion of the Ising model with surface random field, the ordinary boundary condition is stable while a new non-trivial dirty boundary fixed point emerges that is reachable by tuning disorder or temperature.

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  • Ising surface defects can get dirty hep-th · 2026-05-21 · unverdicted · none · ref 43

    In the 4-ε expansion of the Ising model with surface random field, the ordinary boundary condition is stable while a new non-trivial dirty boundary fixed point emerges that is reachable by tuning disorder or temperature.