Matrix Theory and Feynman Diagrams

Matrix Theory and Feynman Diagrams

We briefly review the computation of graviton and antisymmetric tensor scattering amplitudes in Matrix Theory from a diagramatic S-Matrix point of view. It is by now commonly believed that eleven dimensional supergravity is the low-energy effective theory of a more fundamental microscopic model, known as M-theory. A proposed definition of M-theory has been given in terms of the large N limit of...

Feynman diagrams in inverse spec- tral theory

On Perturbation Theory, Dyson Series, and Feynman Diagrams

To study the transitions (scattering, making new particles, decays, etc.) caused by V̂ we want to use a fixed basis of Ĥ0 eigenstates, but we want to keep the transitions separate from wave-packet spreading and other effects due to Schrödinger phases e−iEt of the Ĥ0 itself. The picture of QM which separates these effects is the interaction picture. In the Schrödinger picture, the operators are t...

On Perturbation Theory, Dyson Series, and Feynman Diagrams

Feynman diagrams versus Fermi-gas Feynman emulator