10.3HEP-THNov 2, 2020
Machine Learning Lie Structures & Applications to PhysicsHeng-Yu Chen, Yang-Hui He, Shailesh Lal et al.
Classical and exceptional Lie algebras and their representations are among the most important tools in the analysis of symmetry in physical systems. In this letter we show how the computation of tensor products and branching rules of irreducible representations are machine-learnable, and can achieve relative speed-ups of orders of magnitude in comparison to the non-ML algorithms.
2.3MATH-PHJul 20, 2020
Mixed Moments for the Product of Ginibre MatricesNick Halmagyi, Shailesh Lal
We study the ensemble of a product of n complex Gaussian i.i.d. matrices. We find this ensemble is Gaussian with a variance matrix which is averaged over a multi-Wishart ensemble. We compute the mixed moments and find that at large $N$, they are given by an enumeration of non-crossing pairings weighted by Fuss-Catalan numbers.