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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2509.12506 |
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- In this work, we apply the generalised Feshbach Villars transformation (GFVT) to spin-0 scalar fields in a Schwarzschild gravitational background. Starting from the covariant Klein Gordon equation, we reformulate the dynamics in the FV two-component representation, which enables a natural separation of positive- and negative-energy branches. In the far-field approximation, the system exhibits a hydrogen like bound spectrum, confirming the ability of GFVT to provide a consistent probabilistic interpretation in curved spacetime. We then extend the formalism by introducing a relativistic harmonic oscillator potential, which transforms the radial equation into a biconfluent Heun form. The requirement of square integrability leads to a discrete oscillator spectrum that remains independent of the gravitational parameter, with gravity appearing only through selection rules on the admissible quantum states. Explicit wave functions, probability densities, and graphical results are presented, illustrating the internal consistency of the method. Overall, this study demonstrates the effectiveness of GFVT as a bridge between relativistic quantum mechanics and curved geometry, and it highlights its potential for future applications in strong gravitational fields.