Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum quench in the sine-Gordon model   We consider the time evolution in the repulsive sine-Gordon quantum field
theory after the system is prepared in a particular class of initial states. We
focus on the time dependence of the one-point function of the semi-local
operator $\exp\big(i\ \beta \ \Phi(x)/2\big)$. By using two different methods
based on form-factor expansions, we show that this expectation value decays to
zero exponentially, and we determine the decay rate by analytical means. Our
methods generalise to other correlation functions and integrable models.

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The categories of this paper are: astro-ph
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The categories of this paper are: eess
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
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The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
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The categories of this paper are: nlin