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Analysis of a long-range random field quantum antiferromagnetic Ising model

  • Solid and Condensed State Physics
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Abstract.

We introduce a solvable quantum antiferromagnetic model. The model, with Ising spins in a transverse field, has infinite range antiferromagnetic interactions and random fields on each site following an arbitrary distribution. As is well-known, frustration in the random field Ising model gives rise to a many valley structure in the spin-configuration space. In addition, the antiferromagnetism also induces a regular frustration even for the ground state. In this paper, we investigate analytically the critical phenomena in the model, having both randomness and frustration and we report some analytical results for it.

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Authors and Affiliations

  1. Theoretical Condensed Matter Physics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India

    B. K. Chakrabarti & Arnab Das

  2. Complex Systems Engineering, Graduate School of Information Science and Technology, Hokkaido University, N14-W9, Kita-ku, Sapporo, 060-0814, Japan

    B. K. Chakrabarti & Jun-ichi Inoue

Authors
  1. B. K. Chakrabarti
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  2. Arnab Das
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  3. Jun-ichi Inoue
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Correspondence to B. K. Chakrabarti.

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Chakrabarti, B., Das, A. & Inoue, Ji. Analysis of a long-range random field quantum antiferromagnetic Ising model. Eur. Phys. J. B 51, 321–329 (2006). https://doi.org/10.1140/epjb/e2006-00226-6

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  • DOI: https://doi.org/10.1140/epjb/e2006-00226-6

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