Description
This lecture develops the lattice definitions and computation of strangeness fluctuations and cross-correlations $(\chi_2^S,\chi_{11}^{BS},\chi_{11}^{QS})$ together with baryon-number skewness/kurtosis $(\chi_3^B,\chi_4^B)$ and ratios $S\sigma, \kappa\sigma^2$. Emphasis is on the HISQ pipeline (Taylor expansion, continuum extrapolation ) and how to interpret the temperature and chemical potential trends relevant to fluctuation measurements at RHIC.
