マクロ経済学 モデル

Households, banks, leverage, prices, and macroprudential rules in one cycle.

Worker search, firm hiring, wage setting, and unemployment duration.

Firm balance sheets and bank lending links under credit stress.

Supplier links, inventories, bottlenecks, and price pass-through.

Trading rules, liquidity provision, leverage, and fire-sale stress.

How do heterogeneous firms competing through innovation, adaptive pricing, and credit-constrained investment generate endogenous business cycles, a heavy right-tailed firm-size distribution, and long-run growth without any exogenous shock process?

How do firm-level R&D investment, Schumpeterian innovation cascades, and Keynesian aggregate demand failures jointly produce the statistical properties of long-run growth -- trend growth, business cycles, fat-tailed recessions, and persistent productivity dispersion -- without imposing them from above?

How do goods, labor, capital-goods, credit, and financial markets interact through heterogeneous agent decisions to produce emergent business cycles, credit crunches, and policy transmission effects that no single-market model can capture?

How do heterogeneous household consumption rules, saving buffers, and wealth positions shape the aggregate demand response to fiscal, monetary, and distributional shocks -- and why does the shape of the income/wealth distribution matter more than the mean?

How do interbank lending networks, heterogeneous bank balance sheets, and capital adequacy constraints generate systemic risk, contagion cascades, and too-big-to-fail dynamics that aggregate risk metrics miss entirely?

How do interest rate changes propagate through an economy of heterogeneous households and firms with different balance sheets, credit access, and expectations -- and why does this transmission break down at the zero lower bound?

How do progressive taxation, targeted transfers, and public investment interact with household-level income heterogeneity and heterogeneous marginal propensities to consume to shape aggregate demand, growth, and the size of fiscal multipliers?

How do carbon emissions, climate damages, green innovation, and carbon pricing interact with heterogeneous firms, banks, and households to produce transition risk, stranded assets, and macroeconomic outcomes that integrated assessment models miss?

How do banks' individual liquidity management strategies, payment queuing decisions, and bilateral netting behavior generate systemic gridlock risk, cascading settlement failures, and the need for central bank intraday liquidity provision in large-value payment systems?