Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Raymond and instantons: some recollections and the use of ADHM   After the discovery of the BRST identities in 1974 Raymond spent some two
years mostly on instantons. In those years we had a small group at the Centre
Physique Th\'eorique in Marseille discussing the physics and mathematics of
instantons.
  The upshot of our discussions can be found in a set of lectures given by
Raymond in Erice in 1977 and a year later in a Physics Reports volume. I
present some recollections of that period; mostly how we were influenced by the
twistor approach. I discuss the Atiyah-Drinfeld-Hitchin-Manin (ADHM) method to
obtain instantons ("calorons") in thermal QCD following earlier work. The
building blocks are a prepotential and a gauge invariant propagator.
  Then I will give surprisingly simple results in terms of these building
blocks for the one loop vacuum response to a change in caloron parameters and
some physical consequences for the effective action, in particular screening
properties.

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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: math
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The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: cond-mat
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int