Abstract
We investigate the phase transition temperature in the N-component scalar field theory. We obtain a weakly first-order phase transition in the superdaisy approximation; it becomes a second-order phase transition as N → ∞. This is compared with other approaches.
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Bordag, M., Skalozub, V. Summing Superdaisy Diagrams in the O(N)-Model near the Phase Transition Temperature. Theoretical and Mathematical Physics 131, 450–458 (2002). https://doi.org/10.1023/A:1015131600782
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DOI: https://doi.org/10.1023/A:1015131600782