An auxiliary field can refer to a couple of concepts depending on the context in which it is being used. Below are a few interpretations based on different domains: 1. **Mathematics/Physics**: In theoretical physics, particularly in the context of field theories, auxiliary fields are additional fields introduced to simplify calculations or formulate certain theories. For example, in supersymmetry, auxiliary fields can be added to superspace to ensure that certain properties (like invariance) hold true.
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