Calculatin of -Functions Up to Two-Loop Order in 4 Theory Based on Stochastic Quantization Method
Hiromichi Nakazato, G. Takada, H. Soshi, Y. Yamanaka · Progress of Theoretical Physics · 1988
On the basis of the renormalization scheme of the stochastic quantization method, two β-functions in φ4 theory, βλ and βγ which govern the scaling behaviors of the coupling constant λ and the fictitious time, respectively, are calculated up to the two-loop order.