This Element offers an introduction to selected philosophical issues
that arise in contemporary particle physics, aimed at philosophers who
have limited prior exposure to quantum field theory. One the one hand,
it critically surveys philosophical work on the representation of
particles in quantum field theory, the formal machinery and conceptual
implications of renormalization and renormalization group methods, and
ontological and methodological questions raised by the use of effective
field theory techniques in particle physics. On the other, it identifies
topics in particle physics that have not yet received philosophical
attention and sketches avenues for philosophical analysis of those
topics. The primary aim of the Element is to provide philosophers of
physics with an entry point into the literature on the philosophy of
particle physics and identify interesting directions for future research
for students and researchers alike.