Domain Wall Dynamics near a Quantum Critical Point

Details Domain Wall Dynamics near a Quantum Critical Point Domain Wall Dynamics near a Quantum Critical Point

2007-04-02

arxiv.org/abs/0704.0193v1

Phys. Rev. B 75, 184305 (2007)

Physics

Condensed Matter

Materials Science

to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.75.184305

We study the real-time domain-wall dynamics near a quantum critical point of
the one-dimensional anisotropic ferromagnetic spin 1/2 chain. By numerical
simulation, we find the domain wall is dynamically stable in the
Heisenberg-Ising model. Near the quantum critical point, the width of the
domain wall diverges as $(\Delta -1) ^{-1/2}$.

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