Tootfinder

Increasing Systemic Resilience to Socioeconomic Challenges: Modeling the Dynamics of Liquidity Flows and Systemic Risks Using Navier-Stokes Equations
Davit Gondauri
https://arxiv.org/abs/2507.05287

Increasing Systemic Resilience to Socioeconomic Challenges: Modeling the Dynamics of Liquidity Flows and Systemic Risks Using Navier-Stokes Equations
Modern economic systems face unprecedented socioeconomic challenges, making systemic resilience and effective liquidity flow management essential. Traditional models such as CAPM, VaR, and GARCH often fail to reflect real market fluctuations and extreme events. This study develops and validates an innovative mathematical model based on the Navier-Stokes equations, aimed at the quantitative assessment, forecasting, and simulation of liquidity flows and systemic risks. The model incorporates 13 m…

Once-Reinforced and Self-Interacting Random Walks beyond exchangeability
Andrea Collevecchio, Pierre Tarr\`es
https://arxiv.org/abs/2509.04318 https://arxi…

Once-Reinforced and Self-Interacting Random Walks beyond exchangeability
We present the first rigorous quantitative analysis of once-reinforced random walks (ORRW) on general graphs, based on a novel change of measure formula.~This enables us to prove large deviations estimates for the range of the walk to have cardinality of the order $N^{d/(d+2)}$ in dimension larger than or equal than two. We also prove that ORRW is transient on all non-amenable graphs for small reinforcement.~Moreover, we study the shape of oriented ORRW on euclidean lattices. We also provide …

Universal Statistics of Charges Exchanges in Non-Abelian Quantum Transport
Matteo Scandi, Gonzalo Manzano
https://arxiv.org/abs/2508.15540 https://arxiv.or…

Universal Statistics of Charges Exchanges in Non-Abelian Quantum Transport
We derive detailed and intergral fluctuation relations as well as a Thermodynamic Uncertainty Relation constraining the exchange statistics of an arbitrary number of non-commuting conserved quantities among two quantum systems in transport setups arbitrary far from equilibrium. These universal relations, valid without the need of any efficacy parameter, extend the well-known heat exchange fluctuation theorems for energy and particle transport to the case of non-Abelian quantum transport, where …

On the Statistical Physics of Wealth Distribution
Joel Wagner, Siew Ann Cheong, Viola Priesemann
https://arxiv.org/abs/2509.00573 https://arxiv.org/pdf/250…

On the Statistical Physics of Wealth Distribution
Asset exchange models (AEMs) provide a physics-inspired framework for studying wealth formation. These models capture wealth distribution dynamics via pairwise money exchanges, yielding steady-state distributions from exponential to heavy-tailed power laws. However, empirical validation remains limited due to scarce real-world transaction data. Here, we bridge this gap by analyzing spectral properties of Markov transition matrices from both AEMs and Ethereum blockchain data, enabling quantitati…

I thought this #Guardian / #WaPo piece by some Peter Brennan might be worth a glance, though expecting only 60% stuff everyone knows (or should know), and 40% tedious irrelevant human interest guff. Which just proves that you can never set one's expectations low enough.
Well, I made it as …

Exchange-correlation torques from gauge symmetries
Jacques K. Desmarais, Kamel Bencheikh, Giovanni Vignale, Stefano Pittalis
https://arxiv.org/abs/2506.19458

Exchange-correlation torques from gauge symmetries
The problem of predicting accurate exchange-correlation (xc) spin-torques in non-collinear magnetic systems has dominated the scene of spin-density functional theory (SDFT) in the last two decades. Progress has been hindered by the fact that the spin torque is directly connected to the divergence of the spin current, a quantity that is extraneous to SDFT. Furthermore, SDFT does not apply in the presence of vector potentials and spin-orbit couplings. Here, we propose a solution that exploits the…

Economic relativity: a cut rule for perimeter valuation in equity ownership networks
Omar Di Marzio
https://arxiv.org/abs/2509.04520 https://arxiv.org/pdf/…

Economic relativity: a cut rule for perimeter valuation in equity ownership networks
We introduce the Cut-Based Valuation (CBV), a unified framework for consolidated value in equity/flow networks. The central idea is that economic value is never absolute: it is always defined relative to an observer Omega, which fixes perimeter, measurement basis, units/FX/PPP, discounting, informational regime, and control rules. Given Omega, the Cut Theorem shows that the consolidated value of a perimeter P depends only on boundary quantities across the cut P -> O, while internal reconnection…

Efficient Quantum Information-Inspired Ansatz for Variational Quantum Eigensolver Algorithm: Applications to Atomic Systems
Abdul Kalam, Prasenjit Deb, Akitada Sakurai, B. K. Sahoo, V. S. Prasannaa, B. P. Das
https://arxiv.org/abs/2508.10593

Efficient Quantum Information-Inspired Ansatz for Variational Quantum Eigensolver Algorithm: Applications to Atomic Systems
We present a quantum information-inspired ansatz for the variational quantum eigensolver (VQE) and demonstrate its efficacy in calculating ground-state energies of atomic systems. Instead of adopting a heuristic approach, we start with an approximate multi-qubit target state and utilize two quantum information-theoretic quantities, i.e., von Neumann entropy and quantum mutual information, to construct our ansatz. The quantum information encoded in the target state helps us to design unique bloc…

Evaluating the EU Carbon Border Adjustment Mechanism with a Quantitative Trade Model
Noemi Walczak, Kenan Huremovi\'c, Armando Rungi
https://arxiv.org/abs/2506.23341

Evaluating the EU Carbon Border Adjustment Mechanism with a Quantitative Trade Model
This paper examines the economic and environmental impacts of the European Carbon Border Adjustment Mechanism (CBAM). We develop a multi-country, multi-sector general equilibrium model with input-output linkages and characterise the general equilibrium response of trade flows, welfare and emissions. As far as we know, this is the first quantitative trade model that jointly endogenises the Emission Trading Scheme (ETS) allowances and CBAM prices. We find that the CBAM increases by 0.005\% the EU…

Trade Policy and Structural Change
Hayato Kato, Kensuke Suzuki, Motoaki Takahashi
https://arxiv.org/abs/2508.01360 https://arxiv.org/pdf/2508.01360

Trade Policy and Structural Change
We examine how tariffs affect sectoral composition and welfare in an economy with nonhomothetic preferences and sectors being complements -- key drivers of structural change. Beyond their conventional role in trade protection, tariffs influence industrial structure by altering relative prices and income levels. We qualitatively characterize these mechanisms and use a quantitative dynamic model to show that a counterfactual 20-percentage-point increase in U.S. manufacturing tariffs since 2001 wo…