most citedOn (dis)agreement between different methods of calculation of the imaginary part of the effective action in expanding space-times

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hep-th2024★ 2 cited

On (dis)agreement between different methods of calculation of the imaginary part of the effective action in expanding space-times

E. T. Akhmedov, I. A. Belkovich, D. V. Diakonov +1

We consider two approaches to calculate imaginary parts of effective actions in expanding space-times. While the first approach uses Bogolyubov coefficients, the second one uses th…