Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observing the Berry phase in diffusive conductors: Necessary conditions
  for adiabaticity   In a recent preprint (cond-mat/9803170), van~Langen, Knops, Paasschens and
Beenakker attempt to re-analyze the proposal of Loss, Schoeller and Goldbart
(LSG) [Phys. Rev. B~48, 15218 (1993)] concerning Berry phase effects in the
magnetoconductance of diffusive systems. Van Langen et al. claim that the
adiabatic approximation for the Cooperon previously derived by LSG is not valid
in the adiabatic regime identified by LSG. It is shown that the claim of
van~Langen et al. is not correct, and that, on the contrary, the
magnetoconductance does exhibit the Berry phase effect within the LSG regime of
adiabaticity. The conclusion reached by van~Langen et al. is based on a
misinterpretation of field-induced dephasing effects, which can mask the Berry
phase (and any other phase coherent phenomena) for certain parameter values.

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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
8
The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: physics