2 problems

Let $f^{(1,1)}_a(\theta_1,\ldots,\theta_N)$ and $f^{(2)}_a(\theta_1,\ldots,\theta_N)$ be the level-two descendant form factors defined from the basis elements $c_{-1}^2$ and…

The sine-Gordon and sinh-Gordon theories admit form factors for descendant operators constructed from exponential fields, with descendants generated by the Heisenberg algebra assoc…