Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-induced mode mixing of ultraintense lasers in vacuum   We study the effects of the quantum vacuum on the propagation of a Gaussian
laser beam in vacuum. By means of a double perturbative expansion in
paraxiality and quantum vacuum terms, we provide analytical expressions for the
self-induced transverse mode mixing, rotation of polarization, and third
harmonic generarion. We discuss the possibility of searching for the
self-induced, spatially dependent phase shift of a multipetawatt laser pulse,
which may allow the testing of quantum electrodynamics and new physics models,
such as Born-Infeld theory and models involving new minicharged or axion-like
particles, in parametric regions that have not yet been explored in laboratory
experiments.

20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn