Partition-function character-decomposition framework (Belavin-Polyakov-Zamolodchikov 1984 Nucl Phys B 241, 333). Setup: 2D CFT partition function decomposes as Z(tau, tau-bar) = sum_{i, j} M_{ij} chi_i(tau) chi-bar_j(tau-bar) over…
Partition-function character-decomposition framework (Belavin-Polyakov-Zamolodchikov 1984 Nucl Phys B 241, 333). Setup: 2D CFT partition function decomposes as Z(tau, tau-bar) = sum_{i, j} M_{ij} chi_i(tau) chi-bar_j(tau-bar) over…