Time-dependent source identification problem for a fractional Schrödinger equation with the Riemann–Liouville derivative
UDC 517.9 We consider a Schrödinger equation $i \partial_t^\rho u(x,t)-u_{xx}(x,t) = p(t)q(x) + f(x,t),$ $0<t\leq T,$ $0<\rho<1,$ with  the Riemann–Liouville derivative. An inverse problem is investigated  in which, parallel with $u(x,t),$&a...
Збережено в:
| Дата: | 2023 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Institute of Mathematics, NAS of Ukraine
2023
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| Онлайн доступ: | https://umj.imath.kiev.ua/index.php/umj/article/view/7155 |
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| Назва журналу: | Ukrains’kyi Matematychnyi Zhurnal |
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Репозитарії
Ukrains’kyi Matematychnyi Zhurnal| Резюме: | UDC 517.9
We consider a Schrödinger equation $i \partial_t^\rho u(x,t)-u_{xx}(x,t) = p(t)q(x) + f(x,t),$ $0<t\leq T,$ $0<\rho<1,$ with  the Riemann–Liouville derivative. An inverse problem is investigated  in which, parallel with $u(x,t),$  a time-dependent  factor  $p(t)$  of the source function is also unknown. To solve this inverse problem, we use an  additional condition $ B [u (\cdot,t)] = \psi (t) $ with an arbitrary bounded linear functional $ B $. The existence and uniqueness theorem for the solution to the problem under consideration is proved. The stability inequalities are obtained. The applied method make  it possible to study a similar problem by taking, instead of $d^2/dx^2,$  an arbitrary elliptic differential operator $A(x, D)$ with compact inverse. |
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| DOI: | 10.37863/umzh.v75i7.7155 |