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prajor
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Hello, this might be a basic question. In feynman diagram's we represent the positron as traveling backwards in time. Is that correct ? How do we interpret this ?
A Feynmann diagram is a visual representation of particle interactions in quantum field theory. It uses lines and vertices to show how particles interact with each other.
In a Feynmann diagram, a positron is represented by an arrow pointing backwards in time. This convention was introduced by Richard Feynmann, who used it to represent the antiparticle of the electron.
Feynmann diagrams are important because they provide a way to visualize and calculate the probability of particle interactions. They are also used in theoretical calculations to understand the behavior of particles in different physical situations.
In experiments, Feynmann diagrams are used to interpret and analyze the results of particle collisions. By comparing the predicted diagrams with the actual data, scientists can validate or refine their theories about particle interactions.
While Feynmann diagrams are a useful tool, they also have limitations. They only represent a limited number of possible interactions and do not take into account quantum effects such as virtual particles. Additionally, they cannot fully describe interactions involving strong nuclear forces, which require more complex diagrams.