Thermal entanglement of spins in the Heisenberg model at low temperatures

M. Asoudeh and V. Karimipour
Phys. Rev. A 70, 052307 – Published 9 November 2004
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  • INTRODUCTION
  • SOME GENERAL PROPERTIES OF THE…
  • THE LOW LYING STATES OF THE HEISENBERG…
  • THERMAL ENTANGLEMENT OF TWO SPINS
  • DISCUSSION
  • ACKNOWLEDGEMENTS
    • References

    Abstract

    We calculate the entanglement between two spins in the ferromagnetic Heisenberg chain at low temperatures, and show that when only the ground state and the one-particle states are populated, the entanglement profile is a Gaussian with a characteristic length depending on the temperature and the coupling between spins. The magnetic field affects only the amplitude of the profile and not its characteristic length.

    • Figure
    • Received 1 July 2004

    DOI:https://doi.org/10.1103/PhysRevA.70.052307

    ©2004 American Physical Society

    Authors & Affiliations

    M. Asoudeh* and V. Karimipour†

    • Department of Physics, Sharif University of Technology, P. O. Box 11365-9161, Tehran, Iran

    • *Email address: asoudeh@mehr.sharif.edu
    • †Corresponding author. Email address: vahid@sharif.edu

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    Issue

    Vol. 70, Iss. 5 — November 2004

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