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Is Renormalized Entanglement Entropy Stationary at RG Fixed Points?

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abstract

The renormalized entanglement entropy (REE) across a circle of radius R has been proposed as a c-function in Poincar\'e invariant (2+1)-dimensional field theory. A proof has been presented of its monotonic behavior as a function of R, based on the strong subadditivity of entanglement entropy. However, this proof does not directly establish stationarity of REE at conformal fixed points of the renormalization group. In this note we study the REE for the free massive scalar field theory near the UV fixed point described by a massless scalar. Our numerical calculation indicates that the REE is not stationary at the UV fixed point.

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hep-th 1

years

2025 1

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UNVERDICTED 1

representative citing papers

$c_{\rm eff}$ from Resurgence at the Stokes Line

hep-th · 2025-08-13 · unverdicted · novelty 6.0

Resurgent cyclic orbits' algebraic structure plus the leading q-series term determines the asymptotic growth exponent of dual q-series coefficients, which equals an effective central charge c_eff in a related 3d N=2 QFT.

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  • $c_{\rm eff}$ from Resurgence at the Stokes Line hep-th · 2025-08-13 · unverdicted · none · ref 51 · internal anchor

    Resurgent cyclic orbits' algebraic structure plus the leading q-series term determines the asymptotic growth exponent of dual q-series coefficients, which equals an effective central charge c_eff in a related 3d N=2 QFT.