Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-perturbative Temperature Instabilities in N=4 Strings   We derive a universal thermal effective potential, which describes all
possible high-temperature instabilities of the known N=4 superstrings, using
the properties of gauged N=4 supergravity. These instabilities are due to three
non-perturbative thermal dyonic modes, which become tachyonic in a region of
the thermal moduli space. The latter is described by three moduli, s,t,u, which
are common to all non-perturbative dual-equivalent strings with N=4
supersymmetry in five dimensions: the heterotic on T^4xS^1, the type IIA on
K3xS^1, the type IIB on K3xS^1 and the type I on T^4x S^1. The non-perturbative
instabilities are analysed. These strings undergo a high-temperature transition
to a new phase in which five-branes condense. This phase is described in
detail, using both the effective supergravity and non-critical string theory in
six dimensions. In the new phase, supersymmetry is perturbatively restored but
broken at the non-perturbative level. In the infinite-temperature limit the
theory is topological with an N=2 supersymmetry based on a topologically
non-trivial hyper-Kahler manifold.

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The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph