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arXiv · 1608.02080

Triple point in the $O(2)$ ghost model with higher-order gradient term

Zoltán Péli·Sándor Nagy·Kornél Sailer
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Abstract

The phase structure and the infrared behaviour of the Euclidean 3-dimensional $O(2)$ symmetric ghost scalar field $\phi$ has been investigated in Wegner and Houghton's renormalization group framework, including higher-derivatives in the kinetic term. It is pointed out that higher-derivative coupling provides three phases and leads to a triple point in that RG scheme. The types of the phase transitions have also been identified.

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Zoltán Péli, Sándor Nagy, Kornél Sailer. 2016-08-06. Triple point in the $O(2)$ ghost model with higher-order gradient term. https://doi.org/10.1103/physrevd.94.065037

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