How many physical quantities could be computed in a generic Quantum Field Theory?
130259
Is the S-Matrix the only quantum field observable?
99735
Are there any theoretical limits on the energy of a photon?
38703
Do virtual particles actually physically exist?
64240
Can we measure "wavefunction" of quantum particles?
137430
Limit that appears in particle physics calculation
36152
Bessel function representation of spacelike KG propagator
144886
How many possible electromagnetic wavelengths are possible?
154772
The Momentum Operator in QM
79725
Fields of arbitrary cardinality
17120
Why use Fourier expansion in Quantum Field Theory?
91135
Virtual particles and physical laws
82135
Lagrangian to Hamiltonian in Quantum Field Theory
113606
Dimensionless quantities
147491
When is separating the total wavefunction into a space part and a spin part possible?
40305
Hilbert space of a free particle: Countable or Uncountable?
130830
Counting degrees of freedom for gravitational waves as a gauge field
89295
The interpretation of mass in quantum field theories