Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Slow dynamics of the Fredkin spin chain   The dynamical behavior of a quantum many-particle system is characterized by
the lifetime of its excitations. When the system is perturbed, observables of
any non-conserved quantity decay exponentially, but those of a conserved
quantity relax to equilibrium with a power law. Such processes are associated
with a dynamical exponent $z$ that relates the spread of correlations in space
and time. We present numerical results for the Fredkin model, a quantum spin
chain with a three-body interaction term, which exhibits an unusually large
dynamical exponent. We discuss our efforts to produce a reliable estimate
$z$=3.16(1) through direct simulation of the quantum evolution and to explain
the slow dynamics in terms of an excited bond that executes a constrained
random walk in Monte Carlo time.

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The categories of this paper are: hep-ph
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th