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Quadratic Volatility from the P\"oschl-Teller Potential and Hyperbolic Geometry

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  • Joel Saucedo

Abstract

This investigation establishes a formal equivalence between the generalized Black-Scholes equation under a Quadratic Normal Volatility (QNV) specification and the stationary Schr\"odinger equation for a hyperbolic P\"oschl-Teller potential. A sequence of canonical transformations maps the financial pricing operator to a quantum Hamiltonian, revealing the volatility smile as a direct manifestation of diffusion on a hyperbolic manifold whose geometry is classified by the discriminant of the QNV polynomial. We perform a complete spectral analysis of the financial Hamiltonian, deriving its discrete and continuous spectra and constructing the pricing kernel from the resulting eigenfunctions, which are given by classical special functions. This analytical framework, grounded in a gauge-theoretic perspective, furnishes a non-trivial benchmark for derivative pricing and provides a fundamental geometric interpretation of market anomalies. Future research trajectories toward integrable systems and formal field-theoretic analogies are identified.

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  • Joel Saucedo, 2025. "Quadratic Volatility from the P\"oschl-Teller Potential and Hyperbolic Geometry," Papers 2507.12501, arXiv.org, revised Jul 2025.
    • Handle: RePEc:arx:papers:2507.12501
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