Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum quench in the Luttinger model with finite temperature initial
  state   We study the non-equilibrium dynamics of the Luttinger model after a quantum
quench, when the initial state is a finite temperature thermal equilibrium
state. The diagonal elements of the density matrix in the steady state show
thermal features for high temperature initial states only, otherwise retain
highly non-thermal character. The time evolution of Uhlmann fidelity, which
measures the distance between the time evolved and initial states, is evaluated
for arbitrary initial temperatures and quench protocols. In the long time
limit, the overlap between the time evolved and initial system decreases
exponentially with the temperature with a universal prefactor. Within
perturbation theory, the statistics of final total energy and work are
numerically evaluated in the case of a sudden quench, which yield identical
distributions at zero temperature. In both statistics, temperature effects are
more significant in small systems. The Dirac-delta peak at the adiabatic ground
state energy remains present in the probability distribution of the total
energy, but disappears from the work distribution at non-zero initial
temperatures.

36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat