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Meaning of local field theory

  1. May 28, 2015 #1
    In page of 15 of 'An Introduction to Quantum Field Theory,' Peskin and Schroeder writes

    In a local field theory the Lagrangian can be written as the spatial integral of a Lagrangian density, ... , which is a function of one of more fields and their derivatives.

    Can you explain what the term local field theory means in this context?

    P.S. This question is in the 'Classical Physics' site of the forum because it is a question about classical (and not quantum) field theory.
     
  2. jcsd
  3. May 28, 2015 #2

    ShayanJ

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    Gold Member

  4. May 28, 2015 #3
    Thanks!
     
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