Tootfinder

This https://arxiv.org/abs/2408.03056 has been replaced.
initial toot: https://mastoxiv.page/@a…

Self-consistent theory of $2\times2$ pair density waves in kagome superconductors
Pair density wave (PDW) is an intriguing quantum matter proposed in the frontier of condensed matter physics. However, the existence of PDW in microscopic models has been rare. In this work, we obtain, by Ginzburg-Landau arguments and self-consistent mean field theory, novel $2a_0\times2a_0$ PDW on the kagome lattice arising from attractive on-bond pairing interactions and the distinct Bloch wave functions near the p-type van Hove singularity. The PDW state carrying three independent wave-vecto…

A Common Interface for Automatic Differentiation
Guillaume Dalle, Adrian Hill
https://arxiv.org/abs/2505.05542 https://arxiv.org/pdf/…

A Common Interface for Automatic Differentiation
For scientific machine learning tasks with a lot of custom code, picking the right Automatic Differentiation (AD) system matters. Our Julia package DifferentiationInterface.jl provides a common frontend to a dozen AD backends, unlocking easy comparison and modular development. In particular, its built-in preparation mechanism leverages the strengths of each backend by amortizing one-time computations. This is key to enabling sophisticated features like sparsity handling without putting addition…