5 papers
Higher order quantization conditions for two-body scattering with spin
Lucas Chandler, Frank X. Lee, Andrei Alexandru
We examine the Lüscher quantization condition to high order for the scattering of a spinless particle and a spin-1/2 particle in a periodic box. First, we derive the quantization…
Coupled-channel approach to isotensor scattering from lattice QCD
Yuchuan Feng, Chris Culver, Michael Döring +3
The quest to understand three-body dynamics from first-principle QCD includes the study of non-resonant and resonant systems. The isospin system is of particular interest hav…
Toward extracting scattering phase shift from integrated correlation functions V: complex field model in dimensions
Peng Guo, Frank X. Lee, Andrei Alexandru
In Ref.~\cite{Guo:2024zal} and associated studies, a relativistic finite-volume formalism in dimensions is proposed to extract infinite-volume scattering phaseshift. It is ba…
Atla Selene Mini: A General Purpose Evaluation Model
Andrei Alexandru, Antonia Calvi, Henry Broomfield +9
We introduce Atla Selene Mini, a state-of-the-art small language model-as-a-judge (SLMJ). Selene Mini is a general-purpose evaluator that outperforms the best SLMJs and GPT-4o-mini…
Neutral pion polarizabilities from four-point functions in lattice QCD
Frank X. Lee, Walter Wilcox, Andrei Alexandru +2
We report a proof-of-principle lattice QCD simulation of the electric and magnetic polarizabilities for a neutral pion in the four-point function method. The results are based on t…