abdus salam adjoint alexander polyakov annihilation antimatter antiparticle atom bogoliubov transformation breit equation bryce dewitt carl david anderson chemical potential chen ning yang clifford algebra compton wavelength condensed matter physics correspondence principle covariance and contravariance covariant derivative creation curtis callan david gross dirac algebra dirac sea edward witten effective field theory einstein notation electrical conductor electromagnetic field electron electroweak interaction elementary particle energy enrico fermi ernst stueckelberg ettore majorana feynman checkerboard feynman diagram feynman slash notation fine structure frame fields in general relativity freeman dyson gauge theory giorgio parisi hans bethe harry lehmann hermann grassmann hermann weyl hermitian hermitian matrix hideki yukawa higgs mechanism jeffrey goldstone jellium julian schwinger kurt symanzik lsz reduction formula lev landau majorana equation mass matrix mechanics minkowski momentum murray gell-mann negative energy neutrino neutron nikolay bogolyubov oskar klein paul dirac pauli exclusion principle pauli matrices photon physics positron probability amplitude proca action propagator proton quantum chromodynamics quantum electrodynamics quantum field theory quantum gravity quantum mechanics quantum theory quark rarita-schwinger equation relativity renormalization richard feynman roman jackiw sidney coleman sin-itiro tomonaga space special relativity spectral line speed of light spin spin connection spontaneous symmetry breaking steven weinberg string theory supersymmetry symmetry in physics tensor contraction theory of everything theory of relativity time time reversal tony skyrme tsung-dao lee unitary transformation vacuum vacuum expectation value vacuum state wightman axioms wolfgang pauli yoichiro nambu