QFT over the finite line. Heat kernel coefficients, spectral zeta functions and selfadjoint extensions

J. M. Munoz-Castaneda, Klaus Kirsten, M. Bordag

Following the seminal works of Asorey-Ibort-Marmo and Muñoz-Castañeda-Asorey about selfadjoint extensions and quantum fields in bounded domains, we compute all the heat kernel coef…