Expertini Research Research

Browse Research Papers

11,141+ open-access research outputs.

โœ• Clear
๐Ÿ” jacopo bertolotti
Showing 11141 results for "jacopo bertolotti"
Physics Preprint PDF DOI

Domain-wall melting in all-to-all QSSEP from random-matrix theory

Denis Bernard, Lorenzo Piroli, Stefano Scopa ยท 2026

We study the melting of a domain wall in the quantum simple exclusion process with all-to-all hoppings (a.k.a. the charged SYK$_2$ model). We show that the real-time dynamics of physical quantities ofโ€ฆ

Read Paper โ†’
Economics & Finance Preprint PDF DOI

Data-Driven Stochastic Optimal Control for Intraday Electricity Trading by Renewable Producers

Chiheb Ben Hammouda, Michael Samet, Raul Tempone ยท 2026

The rapid growth of weather-dependent renewable generation increases price volatility and imbalance penalty risk in power markets, creating the need for advanced quantitative trading strategies. We deโ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

Hamilton--Jacobi theory for non-conservative field theories in the $k$-contact framework

Javier de Lucas, Julia Lange, Xavier Rivas, Cristina Sardon ยท 2026

This article develops a Hamilton--Jacobi theory for non-conservative classical field theories, with particular emphasis on dissipative systems, in the framework of co-oriented k-contact geometry. We iโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Continuous-time q-learning for mean-field control with common noise, part-I: Theoretical foundations

Zhenjie Ren, Xiaoli Wei, Xiang Yu, Xun Yu Zhou ยท 2026

This paper investigates the continuous-time counterpart of the Q-function for entropy-regularized mean-field control (MFC) with controlled common noise, coined as q-function by Jia and Zhou (2023) in โ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Deep Policy Iteration for High-Dimensional Mean-Field Games with Regenerative Reformulation

Shuixin Fang, Shupeng Wang, Zhen Wu, Hui Zhang, Tao Zhou ยท 2026

This paper develops a deep policy iteration method for high-dimensional finite-horizon mean-field games. We reformulate the game as a regenerative problem with deterministic cycles, which allows policโ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

Invariant manifolds in barred galaxy simulations. I. Material density waves

Toni Soler-Terricabras, Merce Romero-Gomez, Santi Roca-Fabrega ยท 2026

We investigate the dynamical origin and kinematic signatures of spiral structure in an N-body simulation of an isolated barred galaxy, assessing whether invariant manifold theory provides a consistentโ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

Probabilistic Condition, Decision and Path Coverage of Circuit-based Quantum Programs

Daniel Fortunato, Jose Campos, Rui Abreu ยท 2026

Coverage criteria play a central role in assessing test adequacy in classical software, yet their effectiveness for quantum programs remains poorly understood and largely unexplored. In this paper, weโ€ฆ

Read Paper โ†’
Engineering Preprint PDF DOI

A Matrix-Free Galerkin Multigrid Solver and Failure-Mode Screen for Single-GPU 3D SIMP Linear Systems

Shaoliang Yang, Jun Wang, Yunsheng Wang ยท 2026

Large 3D SIMP studies require repeated elasticity solves for density-dependent operators whose finest matrices are expensive to assemble and whose conditioning degrades under high contrast. We study tโ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

Study on the systematic effects on $b \to c$ inclusive semileptonic decays

Alessandro Barone, Ahmed Elgaziari, Shoji Hashimoto, Zhi Hu, Andreas Juttner, Takashi Kaneko, Ryan Kellermann ยท 2026

We discuss the calculation of the inclusive semileptonic decay for the process $B_s \to X_c \, l \nu_l$ using lattice QCD. This calculation could be decisive in understanding the long-standing tensionโ€ฆ

Read Paper โ†’
AI & Data Science Preprint PDF DOI

ACPO: Anchor-Constrained Perceptual Optimization for Diffusion Models with No-Reference Quality Guidance

Yang Yang, Feifan Meng, Han Fang, Weiming Zhang ยท 2026

Diffusion models have achieved remarkable success in image generation, yet their training is predominantly driven by full-reference objectives that enforce pixel-wise similarity to ground-truth imagesโ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

The dynamical algebra of the generic superintegrable model on the two-sphere

Nicolas Crampe, Quentin Labriet, Lucia Morey, Satoshi Tsujimoto, Luc Vinet, Alexei Zhedanov ยท 2026

The rank two Jacobi algebra $\mathfrak{J}_2$ is identified as the dynamical algebra of the generic quadratic superintegrable model on the two-sphere. The physical representation of this algebra is obtโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Interlacing of zeros of polynomials completed with two additional points

Kerstin Jordaan, Vikash Kumar ยท 2026

We investigate completed interlacing of zeros for pairs of polynomial sequences that fail to interlace by exactly two points. Using a general mixed recurrence relation, we identify a quadratic polynomโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Approximations of the Mortensen observer using higher order extended Kalman filters

Tobias Breiten, Justus Ramme, Jesper Schroder ยท 2026

A polynomial approximation of the minimum energy estimator, also called Mortensen observer, is discussed. The method relies on successive differentiations of an underlying value function and the Hamilโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

C-PINN: A neural network framework based on the Cord\`{e}s condition for solving linear and fully nonlinear equations in non-divergence form and its applications

Bingcheng Hu, Lixiang Jin, Zhaoxiang Li ยท 2026

In this paper, we propose a novel Physics-Informed Neural Network (PINN) framework based on the Cord\`{e}s condition for solving both linear and fully nonlinear partial differential equations (PDEs) iโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Fractional calculus via variable-transform-based spectral approximations

Xiaolin Liu, Kuan Xu ยท 2026

We present a novel and unifying framework for constructing spectral approximations to fractional integral operators. These spectral approximations are based on transplanted Chebyshev polynomials, whicโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Path-dependent Hamilton--Jacobi equations: Uniqueness results for viscosity solutions defined via families of compact sets

Mikhail I. Gomoyunov ยท 2026

We consider a path-dependent Hamilton--Jacobi equation with coinvariant derivatives over the space of continuous functions. We prove two uniqueness results for viscosity (generalized) solutions defineโ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

Simple Analytical Solutions of the Wheeler-DeWitt Equation in the Classical Hamilton-Jacobi Limit

Naoto Maki, Chia-Min Lin, Kazunori Kohri ยท 2026

We investigate the Wheeler-DeWitt equation for a flat, homogeneous, and isotropic Universe containing a canonical scalar field with a potential. We show that under the constraint $|\Psi|=1$, where theโ€ฆ

Read Paper โ†’
Mathematics Preprint PDF DOI

Encoded Forward Backward Stochastic Neural Network for High-Dimensional Backward Stochastic Differential Equations and Parabolic Partial Differential Equations

Zhao Zhang, Zhuopeng Hou ยท 2026

Backward stochastic differential equation (BSDE) provides probabilistic solutions for a class of parabolic partial differential equations (PDEs). DeepBSDE and FBSNN are two deep learning approaches foโ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

Optimal paths across potentials on scalar field space

Saskia Demulder, Dieter Lust, Carmine Montella, Thomas Raml ยท 2026

Motivated by the Swampland Distance Conjecture, we study distances in field space using the framework of Optimal Transport. The associated optimisation problem naturally leads to a notion of distance โ€ฆ

Read Paper โ†’
Physics Preprint PDF DOI

Recovering extra-tidal open cluster members via multi-elemental chemical tagging

Andres E. Piatti ยท 2026

The identification of open cluster (OC) members has been revolutionized by high-precision Gaia astrometry, yet traditional kinematic membership selections remain inherently conservative, often overlooโ€ฆ

Read Paper โ†’
Page 1 of 558 Next โ†’