Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Space-time evolution of the \lap model: classical and quantum aspects   A time dependent variational approach is used to derive the equations of
motion for the \lambda \phi^4 model. The simultaneous evolution of the quantum
fluctuations and of the classical part of the field is considered in a lattice
of 1+1 dimensions. Different initial conditions corresponding to non
equilibrium situations are considered and evolved in time. Such high energy
localized configurations expand in the lattice by ``bumps'' which may change
with time. The quantum fluctuations make the peaks be smoother and the
expansion faster.

32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph