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Gradient terms In Commutators of Currents
An Apprcaoh to Nonrenormalisable Field Theory
On the Quantum Mechanical NBody Problem
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analytic function analytio appears arbitrary assume assumption asymptotic behaviour asymptotio axiomatic bound calculation canonical commutation relations canonical quantization ccefficient commutator components condition consider continucus convergent corresponding cut-off dces defined diagonal discussed dispersion relations divergent dynamical limit electrodynamics elementary energy momentum vector equation expression faot finite formula funotion gauge invariant given gradient term graph hamiltonian infinity integral interacting introduce kernel Lagrangian leads Lee-model leoture localizable theories Lorentz Lorentz transformations matrix elements momenta N-body N-body problem N-theories non-trivial nonrenormalizable obtained oonneoted ooupled operator p-space parameters particles perturbation theory photon Phys physical positive definite potential problem propagator properties prove quantities quantization quantum field theory renormalization renormalization terms representation result right-hand side S-matrix satisfy scalar scattering amplitude singular solution space of test spectral function test functions Theorem tion transformations two-point unitarity vacuum vanishes variables vector field vertex function whioh zero