# Thermal entanglement of the mixed spin-1/2 and spin-5/2 Heisenberg model under an external magnetic field

Thermal entanglement of the mixed spin-1/2 and spin-5/2 Heisenberg model under an external... We use the concept of negativity to study the entanglement of spin-1/2 and spin-5/2 antiferromagnetic Heisenberg model with an inhomogeneous magnetic field. Analytical conclusions of the model are acquired. It is found that the critical temperature $$T_\mathrm{c}$$ T c goes up, as the increase of anisotropy parameter $$k$$ k . The temperature $$T_\mathrm{c}$$ T c becomes bigger than the results of spin-1/2 and spin-3/2 Heisenberg XXZ chain for the same value of $$k$$ k . And we can gain more entanglement at higher temperature by coordinating the value of inhomogeneity $$b$$ b . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

# Thermal entanglement of the mixed spin-1/2 and spin-5/2 Heisenberg model under an external magnetic field

, Volume 13 (7) – Mar 18, 2014
11 pages

/lp/springer_journal/thermal-entanglement-of-the-mixed-spin-1-2-and-spin-5-2-heisenberg-Cl9JctxggG
Publisher
Springer Journals
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-014-0745-7
Publisher site
See Article on Publisher Site

### Abstract

We use the concept of negativity to study the entanglement of spin-1/2 and spin-5/2 antiferromagnetic Heisenberg model with an inhomogeneous magnetic field. Analytical conclusions of the model are acquired. It is found that the critical temperature $$T_\mathrm{c}$$ T c goes up, as the increase of anisotropy parameter $$k$$ k . The temperature $$T_\mathrm{c}$$ T c becomes bigger than the results of spin-1/2 and spin-3/2 Heisenberg XXZ chain for the same value of $$k$$ k . And we can gain more entanglement at higher temperature by coordinating the value of inhomogeneity $$b$$ b .

### Journal

Quantum Information ProcessingSpringer Journals

Published: Mar 18, 2014

### References

• Quantum information and computation
Bennett, CH; Divincenzo, DP
• Quantum computation with quantum dots
Loss, D; Divincenzo, DP
• Entangled rings
Oconnor, KM; Wootters, WK

## You’re reading a free preview. Subscribe to read the entire article.

### DeepDyve is your personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month ### Explore the DeepDyve Library ### Search Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly ### Organize Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place. ### Access Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals. ### Your journals are on DeepDyve Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more. All the latest content is available, no embargo periods. DeepDyve ### Freelancer DeepDyve ### Pro Price FREE$49/month
\$360/year

Save searches from
PubMed

Create lists to

Export lists, citations