Reconsidering the Equilibrium Concept
Toward a Constructive Framework for the Modern Economy
DOI:
https://doi.org/10.51094/jxiv.1409Keywords:
macroeconomics, mathematical economics, international economics, Ramsey model, global imbalances, secular stagnationAbstract
This paper proposes a dynamic equilibrium framework that reinterprets persistent macroeconomic issues—global imbalances, long-run deflation or entrenched inequality—not as market failures, but as structural outcomes. Departing from standard nominal‑adjustment models, it incorporates asset‑side mechanisms and reconsiders the transversality condition (TVC), deriving:R_t-ρ=n+D_a-U_(θa)θ/U_c; This balance means the divergence between asset returns (R_t) and time preference (ρ) is sustained by the balance of capital diffusion (D_a), population growth (n) and preference terms (U_(θa)θ/U_c). As result, equilibrium arises from structural and institutional interplay beyond a price‑clearing mechanism. The framework redefines the TVC as a structural condition on asset dissipation and valuation, explaining steady states with persistent differences in asset levels, allocation, or income distribution. By reframing disequilibrium as endogenous optimization outcomes, it offers a basis for analyzing macroeconomic dynamics and designing pragmatic policy tools—for example, Structural Selection of the Steady State, Policy Control of Capital Flows, Asset Dynamics–Based Policy Reconstruction and so on—. In this way, economics may better reflect the realities of economic societies and confront structural challenges.
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Submitted: 2025-07-24 16:29:38 UTC
Published: 2025-07-29 02:50:15 UTC — Updated on 2025-08-29 01:18:58 UTC
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Reason(s) for revision
- The chapter structure has been completely revised. - The transversality conditions have been analyzed in depth (pages 7-8, 12-14, and 15). - The final chapter has been completely rewritten.License
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Kazuhito Kitamura

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