The oscillator vacuum is annihilated by all annihilation operators. Acting with creation operators constructs Fock states. In single-string quantization this is the unexcited string, not the empty spacetime state.
Ancestors (6)
Incoming links (52)
- Annihilation operator
- Bogoliubov vacuum
- Bosonic species-swap generator
- Complex structure on the Klein-Gordon solution space
- Covariant photon Fock space
- Hadamard condition
- Optical quadrature
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- Positive stationary Hamiltonian selects a particle splitting
- Quantum theory of optical coherence
- Vacuum state
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