Author

T. Li

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Preprint Sep 2026

A Differentiable Parametric Model of Binary-Black-Hole Initial Data: I. Conformally flat Bowen-York punctures

Constraint-satisfying initial data for binary black holes require the repeated solution of a nonlinear elliptic boundary-value problem throughout the physical parameter space. We present a para\-metric, differentiable initial-data model that combines sparse-grid spectral interpolation with Newton refinement over a fami...

F. De Ceuster, T. Li · 1 citation

Preprint Sep 2026

A Multidimensional General-Relativistic Boltzmann Solver for Neutrino Transport: Implementation, Discretization and Optimization

We present the implementation of a multidimensional general-relativistic Boltzmann solver for neutrino transport using the finite volume method. We extend the general-relativistic magnetohydrodynamics solver \texttt{Gmunu} to discretize the full $6$D phase space. We discretize the momentum space in spherical coordinate...

A. Offermans, H. Ng, Patrick Chi-Kit Cheong et al. · 0 citations

Preprint Aug 2026

Modified Bryson-Frazier Smoothing and Hyperparameter Learning for Temporal Gaussian Process Regression

The modified Bryson-Frazier (MBF) smoother is revisited as an alternative to the RTS smoother for Gaussian process regression in its state-space representation and it is demonstrated that the intermediate quantities computed by the MBF smoother can be reused to compute gradients of the negative log marginal likelihood,...

Tom Colemont, B. Evens, T. Li et al. · 0 citations