On the density of 2D critical percolation gaskets and anchored clusters

Camia, Federico

doi:10.1007/s11005-024-01793-0

Lett Math Phys

2024

DOI: 10.1007/s11005-024-01793-0

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On the density of 2D critical percolation gaskets and anchored clusters

Federico Camia

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Logarithmic correlation functions in 2D critical percolation

Camia,

Feng

2024

J. High Energ. Phys.

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It is believed that the large-scale geometric properties of two-dimensional critical percolation are described by a logarithmic conformal field theory, but it has been challenging to exhibit concrete examples of logarithmic singularities and to find an explanation and a physical interpretation, in terms of lattice observables, for their appearance. We show that certain percolation correlation functions receive independent contributions from a large number of similar connectivity events happening at different scales. Combined with scale invariance, this leads to logarithmic divergences. We study several logarithmic correlation functions for critical percolation in the bulk and in the presence of a boundary, including the four-point function of the density (spin) field. Our analysis confirms previous findings, provides new explicit calculations and explains, in terms of lattice observables, the physical mechanism that leads to the logarithmic singularities we discover. Although we adopt conformal field theory (CFT) terminology to present our results, the core of our analysis relies on probabilistic arguments and recent rigorous results on the scaling limit of critical percolation and does not assume a priori the existence of a percolation CFT. As a consequence, our results provide strong support for the validity of a CFT description of critical percolation and a step in the direction of a mathematically rigorous formulation of a logarithmic CFT of two-dimensional critical percolation.

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Logarithmic correlation functions in 2D critical percolation

Camia,

Feng

2024

J. High Energ. Phys.

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On the density of 2D critical percolation gaskets and anchored clusters

Cited by 1 publication

References 12 publications

Logarithmic correlation functions in 2D critical percolation

Logarithmic correlation functions in 2D critical percolation

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