Abstract
The Einstein-Cartan theory with a cosmological constant and an external current is analyzed. Single-loop contraterms repeat the structure of the original action on the mass shell. This fact is utilized to write a renormalization-group equation for the effective charges associated with the cosmological constant and the square of the current. Asymptotic freedom is realized in the ultraviolet region for the new charges.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 40–44, September, 1988.
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Bukhbinder, I.L., Shapiro, I.L. Asymptotic freedom in the Einstein-Cartan theory. Soviet Physics Journal 31, 723–726 (1988). https://doi.org/10.1007/BF00895980
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DOI: https://doi.org/10.1007/BF00895980