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Q&A

Posts tagged quantum-field-theory

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Q&A Why is it forbidden for two photons to turn into one?

In the context of quantum field theory, why is it impossible for two photons (or other massless bosons like gluons) to collide and produce a single photon? This kind of a process is supposed to be ...

2 answers  ·  posted 10mo ago by Technically Natural‭  ·  last activity 10mo ago by Derek Elkins‭

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Q&A Interaction terms in Srednicki's proof of spin-statistics theorem

In Srednicki's proof of the spin-statistics theorem for scalar fields ("Quantum Field Theory", section 4), he considers interaction terms, added to the free Hamiltonian, that are Hermitian function...

1 answer  ·  posted 3y ago by Technically Natural‭  ·  last activity 3y ago by Mithrandir24601‭