Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunneling Without Bounce   The false vacua of some potentials do not decay via Euclidean bounces. This
typically happens for tunneling actions with a flat direction (in field
configuration space) that is lifted by a perturbation into a sloping valley,
pushing the bounce off to infinity. Using three different approaches we find a
consistent picture for such decays. In the Euclidean approach the bottom of the
action valley consists of a family of pseudo-bounces (field configurations with
some key good properties of bounces except extremizing the action). The
pseudo-bounce result is validated by minimizing a WKB action in Minkowski space
along appropriate paths in configuration space. Finally, the simplest approach
uses the tunneling action method proposed recently with a simple modification
of boundary conditions.

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The categories of this paper are: cond-mat
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The categories of this paper are: astro-ph
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The categories of this paper are: stat
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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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: math