2 papers
hep-th1998
The Wheeler Propagator
C. G. Bollini, M. C. Rocca
We study the half advanced and half retarded Wheeler Green function and its relation to Feynman propagators. First for massless equation. Then, for Klein-Gordon equations with arbi…
hep-th1996
Non-Local Pseudo-Differential Operators
D. G. Barci, C. G. Bollini, L. E. Oxman +1
We define, in a consistent way, non-local pseudo-differential operators acting on a space of analytic functionals. These operators include the fractional derivative case. In this c…