Discussion Overview
The discussion centers on whether photons collide with each other like massive objects, exploring the implications of such interactions within the framework of physics. It touches on concepts from relativistic quantum field theory, the nature of particles, and the significance of mass in this context.
Discussion Character
- Debate/contested
- Technical explanation
- Conceptual clarification
Main Points Raised
- Some participants suggest that photons obey the laws of relativistic quantum field theory, including photon-photon scattering.
- Others argue that photons are real particles but possess zero mass, challenging the notion of "relativistic mass" as outdated and confusing.
- One participant questions the definition of "other particle" and what constitutes a particle.
- Another participant notes that collisions at a micro perspective involve forces, but suggests that photons do not exhibit such forces, leading to the idea that they behave as a superposition of waves instead.
- It is mentioned that photons can interact through processes involving virtual electrons and positrons, although these interactions have a very small probability and are difficult to observe.
Areas of Agreement / Disagreement
Participants express differing views on the nature of photon interactions and the significance of mass, indicating that multiple competing views remain without a consensus.
Contextual Notes
There are unresolved questions regarding the definitions of particles and the implications of mass in the context of photons, as well as the limitations of observing photon interactions.