Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semiclassical calculation of an induced decay of false vacuum   We consider a model where a scalar field develops a metastable vacuum state
and weakly interacts with another scalar field. In this situation we find the
probability of decay of the false vacuum stimulated by the presence and
collisions of particles of the second field. The discussed calculation is an
illustration of the recently suggested thermal approach to treatment of induced
semiclassical processes.

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The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph