Aspects of the derivative coupling model in four dimensions
Andreas Aste
TL;DR
This paper discusses a 3+1-dimensional derivative coupling model involving a massive Dirac field and a massless scalar field, exploring key quantum field theory concepts such as regularization, locality, causality, and gauge transformations.
Contribution
It provides a concise analysis of the derivative coupling model in four dimensions, clarifying fundamental quantum field theory concepts within this framework.
Findings
Clarifies the role of regularization in quantum fields
Examines locality and causality in the model
Discusses gauge transformations of field operators
Abstract
A concise discussion of a 3+1-dimensional derivative coupling model, in which a massive Dirac field couples to the four-gradient of a massless scalar field, is given in order to elucidate the role of different concepts in quantum field theory like the regularization of quantum fields as operator valued distributions, correlation distributions, locality, causality, and field operator gauge transformations.
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