1. The field operator is not the same thing as a single-particle wavefunction. 2. Field operators have tried several enhanced recovery projects to improve production rates.3. These are owned and operated by the oil or gas field operator . 4. Where no extra time-ordered product of field operators has been inserted, for simplicity. 5. From a field operator 's point of view, Saralweb application folders automate daily routines. 6. The field operator acts on quantum states of the theory. 7. Nigeria is a billion dollars in arrears in its payments to oil field operators . 8. Note that the contraction of a time-ordered string of two field operators is a c-number. 9. The company also became involved in the Ormen Lange gas field, eventually becoming the field operator . 10. The commutator of the field operators is invariant under unitary transformation ~ \ hat U ~: