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DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1140/epjp/s13360-022-02634-6.Appendix) was visible in the surrounding text but could not be confirmed against doi.org as printed.
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S. Kala, H. Nandan, and P. Sharma, Shadow and weak gravitational lensing of a rotating regular black hole in a non-minimally coupled Einstein-Yang-Mills theory in the presence of plasma, Eur. Phys. J. Plus 137, 457 (2022). DOI:https://doi.org/10.1140/epjp/ s13360-022-02634-6. Appendix In this Appendix we provide the technical details of the calculation of the fluctuation determinant entering the prefactorF E. Starting from the operatorLof Eq. (28), obtained from the second variation of the Eu- clidean action, we perform an isospectral transformation to a Schr¨ odinger-like operator˜Land apply the Gel’fand- Yaglom theorem [24, 25] to evaluate the corresponding functional determinant. Let us consider the operatorLof Eq. (28) which sat- isfies the differential problem 0 =Lδa(τ).(31) An isospectral transformation δa(τ) = χ(τ)p ac(τ) (32) witha c(τ) = √ 3 sin(τ / √
Evidence payload
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"reconstructed_doi": "10.1140/epjp/s13360-022-02634-6.Appendix",
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