Hi, I have a question that how to interpret the field function Φ in Quantum Field Theory. As I can see, it is an operator through second quantization and the co-ordinate representation no long exist after second quantization. So we cannot regard it as wave function any more. Could Quantum Field Theory still allow Born's Statistical Interpretation which exists in QM? I think not, since Statistical Interpretation is on wave function in QM. What is your opinion? Thanks a lot!