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Field theoretical calculation of the specific heat exponent for a classical N-vector model in a random external field

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Abstract:

We calculate using diagrammatic perturbation theory in the two-loop approximation, the specific heat exponent α for the classical N-vector model in a random external field for spatial dimension (D) lying between four and six. The calculation supports the modified hyperscaling \((D - 2)\nu = 2 - \alpha \), where υ is the correlation length exponent.

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Authors and Affiliations

  1. Department of Theoretical Physics, Indian Association For Cultivation of Science, Jadavpur, 700032, Calcutta, India

    K. Ghosh, A. Dutta & J.K. Bhattacharjee

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  1. K. Ghosh
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  2. A. Dutta
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  3. J.K. Bhattacharjee
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Received: 18 March 1998 / Revised: 17 April 1998 / Accepted: 21 April 1998

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Ghosh, K., Dutta, A. & Bhattacharjee, J. Field theoretical calculation of the specific heat exponent for a classical N-vector model in a random external field. Eur. Phys. J. B 4, 219–221 (1998). https://doi.org/10.1007/s100510050372

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  • DOI: https://doi.org/10.1007/s100510050372

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