Significance of Negative Energy States in Quantum Field Theory (1)
نویسنده
چکیده
We suppose that there are both particles with negative energies described by LW and particles with positive energies described by LF , L = LF + LW , LF is equivalent to Lagragian density of the conventional QED, LW and LF are symmetric, independent of each other before quantization and dependent on each other after quantization. From this we define transfomation operators and quantize free fields by the transformation operators replacing the creation and annihilation operators in the conventional QED. That the energy of the vacuum state is equal to zero is naturally obtained. Thus we can easily determine the cosmological constant according to data of astronomical observation, and it is possible to correct nonperturbational methods which depend on the energy of the ground state in quantum field theory.
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