Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the stability of KMS states in perturbative algebraic quantum field
  theories   We analyze the stability properties shown by KMS states for interacting
massive scalar fields propagating over Minkowski spacetime, recently
constructed in the framework of perturbative algebraic quantum field theories
by Fredenhagen and Lindner \cite{FredenhagenLindner}. In particular, we prove
the validity of the return to equilibrium property when the interaction
Lagrangian has compact spatial support. Surprisingly, this does not hold
anymore, if the adiabatic limit is considered, namely when the interaction
Lagrangian is invariant under spatial translations. Consequently, an
equilibrium state under the adiabatic limit for a perturbative interacting
theory evolved with the free dynamics does not converge anymore to the free
equilibrium state. Actually, we show that its ergodic mean converges to a non
equilibrium steady state for the free theory.

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The categories of this paper are: chem-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org