Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the geometry of ghosts   An inspection of the precise geometric constructions underlying fundamental
notions in quantum gauge field theories sheds light on various aspects which
tend to be obscured in the usual formalisms. Revising the notions of mutually
conjugated "internal" bundles we propose a general rule for the constructions
of free quantum fields and their conjugates, naturally yielding the needed
fundamental properties with regard to contractions, super-commutators, field
momentum and Hamiltonian, and other quantities. This scheme applies to fields
of all types; in particular we examine consequences in relation to ghosts and
anti-ghosts. Finally in the context of observer-independent Fr\"olicher-smooth
quantum bundles we show how the antifield sectors naturally arise, and examine
the precise relation among these and the BRST symmetry of a gauge field theory.

24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat