تقرير
Uniform Asymptotic Approximation Method with P\'oschl-Teller Potential
| العنوان: | Uniform Asymptotic Approximation Method with P\'oschl-Teller Potential |
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| المؤلفون: | Pan, Rui, Marchetta, John Joseph, Saeed, Jamal, Cleaver, Gerald, Li, Bao-Fei, Wang, Anzhong, Zhu, Tao |
| المصدر: | Universe 2023, 9 (11), 471 |
| سنة النشر: | 2023 |
| المجموعة: | General Relativity and Quantum Cosmology |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology |
| الوصف: | In this paper, we study analytical approximate solutions of the second-order homogeneous differential equations with the existence of only two turning points (but without poles), by using the uniform asymptotic approximation (UAA) method. To be more concrete, we consider the P\"oschl-Teller (PT) potential, for which analytical solutions are known. Depending on the values of the parameters involved in the PT potential, we find that the upper bounds of the errors of the approximate solutions in general are $\lesssim 0.15\% \sim 10\% $, to the first-order approximation of the UAA method. The approximations can be easily extended to high-order, with which the errors are expected to be much smaller. Such obtained analytical solutions can be used to study cosmological perturbations in the framework of quantum cosmology, as well as quasi-normal modes of black holes. Comment: Universe 2023, 9 (11), 471. In Honor of Prof. Jorge Pullin on His 60th Anniversary |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2309.03327 |
| رقم الأكسشن: | edsarx.2309.03327 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |