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摘要
The phase structure and the infrared behavior of the Euclidean three-dimensional O(2) symmetric ghost scalar field model with a higher-order derivative term has been investigated in Wegner and Houghton's renormalization group framework. The symmetric phase in which no ghost condensation occurs and the phase with restored symmetry but with a transient presence of a ghost condensate have been identified. Finiteness of the correlation length at the phase boundary hints to a phase transition of first order. The results are compared with those for the ordinary O(2) symmetric scalar field model.
- 出版日期2016-9-15
