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most citedCompositeness of baryonic resonances: Applications to the Delta(1232), N(1535), and N(1650) resonances

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hep-th2011★ 31 cited

Nonperturbative infrared effects for light scalar fields in de Sitter space

Takashi Arai

We study the phi^4 scalar field theory in de Sitter space using the 2PI effective action formalism. This formalism enables us to investigate the nonperturbative quantum effects. We…