Notes on massless scalar field partition functions, modular invariance and Eisenstein series
Notes on massless scalar field partition functions, modular invariance and Eisenstein series
A bstract The partition function of a massless scalar field on a Euclidean spacetime manifold ℝ d− 1 × 𝕋 2 and with momentum operator in the compact spatial dimension coupled through a purely imaginary chemical potential is computed. It is modular covariant and admits a simple expression in terms …