Homework Help Overview
The discussion revolves around Moller scattering of electrons, specifically the tree-level diagrams that can be derived from a given Lagrangian for spinless electrons and photons. The participants are exploring the implications of the Lagrangian and the types of diagrams that can be drawn for the process $$e^-e^- \to e^-e^-$$.
Discussion Character
- Conceptual clarification, Assumption checking, Problem interpretation
Approaches and Questions Raised
- Participants discuss the interaction terms in the Lagrangian and question the number of tree-level diagrams that can be constructed. There is a focus on identifying the t and u channels and the possibility of an s-channel diagram. Some participants express uncertainty about whether a third diagram exists and whether the notation for the electrons is appropriate given the context.
Discussion Status
The discussion is active, with participants presenting differing views on the existence of an s-channel diagram. Some suggest that the original question may contain an error, while others defend the possibility of such a diagram based on the properties of the particles involved. There is an ongoing examination of the implications of the Lagrangian and the nature of the particles.
Contextual Notes
Participants note that the Lagrangian only includes the field for the electron without its antiparticle, leading to questions about the nature of the electron in this context. There is a recognition that the notation used may be misleading, given the assumptions about particle properties.