Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultrafast loss of lattice coherence in the light-induced structural
  phase transition of the Mott-Insulator V$_2$O$_3$   In solids, the response of the lattice to photo-excitation is often described
by the inertial evolution on an impulsively modified potential energy surface
which leads to coherent motion. However, it remains unknown if vibrational
coherence is sustained through a phase transition, during which coupling
between modes can be strong and may lead to rapid loss of coherence. Here we
use coherent phonon spectroscopy to track lattice coherence in the structural
phase transition of V$_2$O$_3$. In both the low and high symmetry phases unique
coherent phonon modes are generated at low fluence. However, coherence is lost
when driving between the low and high symmetry phases. Our results suggest
non-inertial dynamics dominate during phase transition due to disorder and
multi-mode coupling.

37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn