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The density of imaginary multiplicative chaos is positive

Juhan Aru, Antoine Jego, Janne Junnila

8/3/24 Published in : arXiv:2403.05289

Consider a log-correlated Gaussian field Γ and its associated imaginary multiplicative chaos :e^{i \beta \Gamma}: where β is a real parameter. In [AJJ22], we showed that for any nonzero test function f, the law of \int f :e^{i \beta \Gamma}: possesses a smooth density with respect to Lebesgue measure on C. In this note, we show that this density is strictly positive everywhere on C. Our simple and direct strategy could be useful for studying other functionals on Gaussian spaces.

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  • Statistical Mechanics

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  • Statistical Mechanics and Random Structures
  • Spectral gap problems in non-perturbative quantum theory

On the crossing number of arithmetic curve systems

Stability of viscous three-dimensional stratified Couette flow via dispersion and mixing

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