These lecture notes assemble the standard Wiener-chaos toolbox — Hermite polynomials, Wick calculus, the Gaussian free field, and Φ⁴ renormalisation — for a summer-school audience.
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Topics in Gaussian Wiener chaos expansion
These lecture notes assemble the standard Wiener-chaos toolbox — Hermite polynomials, Wick calculus, the Gaussian free field, and Φ⁴ renormalisation — for a summer-school audience.