Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Renormalized Unruh-DeWitt Particle Detector Models for Boson and Fermion
  Fields   Since quantum field theories do not possess proper position observables,
Unruh-DeWitt detector models serve as a key theoretical tool for extracting
localized spatio-temporal information from quantum fields. Most studies have
been limited, however, to Unruh-DeWitt (UDW) detectors that are coupled
linearly to a scalar bosonic field. Here, we investigate UDW detector models
that probe fermionic as well as bosonic fields through both linear and
quadratic couplings. In particular, we present a renormalization method that
cures persistent divergencies of prior models. We then show how perturbative
calculations with UDW detectors can be streamlined through the use of extended
Feynman rules that include localized detector-field interactions.Our findings
pave the way for the extension of previous studies of the Unruh and Hawking
effects with UDW detectors, and provide new tools for studies in relativistic
quantum information, for example, regarding relativistic quantum communication
and studies of the entanglement structure of the fermionic vacuum.

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The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
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The categories of this paper are: stat
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The categories of this paper are: nlin
10
The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: eess