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Harmonic crossover exponents in O(n) models with the pseudo-epsilon expansion approach

Pasquale Calabrese·Pietro Parruccini
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Abstract

We determine the crossover exponents associated with the traceless tensorial quadratic field, the third- and fourth-harmonic operators for O(n) vector models by re-analyzing the existing six-loop fixed dimension series with pseudo-epsilon expansion. Within this approach we obtain the most accurate theoretical estimates that are in optimum agreement with other theoretical and experimental results.

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Pasquale Calabrese, Pietro Parruccini. 2005-02-28. Harmonic crossover exponents in O(n) models with the pseudo-epsilon expansion approach. https://doi.org/10.1103/physrevb.71.064416

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