Why can only the Higgs particle have a non-zero expected value in a vacuum?
82894
Why cannot fermions have non-zero vacuum expectation value?
43842
Negative probabilities in quantum physics
91135
Virtual particles and physical laws
45283
Why don't virtual particles violate conservation of mass/energy?
100098
Chemical potential of particles with zero mass
94230
I want to understand a trick in the derivation of the Schwinger-Dyson equations
27788
Why is the expected value $E(X^2) \neq E(X)^2$?
132263
Pauli principle for particles very far apart from each other
154005
What do we mean when we say 't Hooft proved that Standard Model is renormalizable?
33978
Is the Higgs boson not responsible for most mass?
58728
Why does the speed of light in vacuum have no uncertainty?
31003
Why you need a graviton when you have the higgs boson?
11181
Counting degrees of freedom of gauge bosons
137430
Limit that appears in particle physics calculation
7824
Particles reaching a singularity
94896
Deriving a QM expectation value for a square of momentum $\langle p^2 \rangle$
87914
Contradictory result for scalar-field propagator from Feynman rules and LSZ formula