We propose a new approach to the quasitopological theory of gravity based on a modified classical double-copy construction. Focusing on static, spherically symmetric configurations, we show that all vacuum solutions of $D$-dimensional quasitopological gravity can be obtained from an auxiliary nonlinear electrodynamics defined in a flat ($D+1$)-dimensional spacetime. The gravitational field equations reduce to an algebraic relation between a primary curvature invariant and the electric field strength, while the remaining dynamics is governed by a Gauss-law constraint for a pointlike charge in the auxiliary space. This correspondence provides a transparent interpretation of higher-curvature gravitational interactions in terms of nonlinear gauge dynamics and explains the absence of higher-derivative terms in the reduced equations. As illustrative examples, we apply the formalism to Born-Infeld- and Hayward-type models, obtaining higher-dimensional regular black-hole solutions with a de Sitter-like core. Our results extend the scope of the double-copy paradigm beyond Einstein gravity and suggest a unifying framework for a broad class of higher-curvature theories.

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• Alternative gravity theories