We introduce a method, numerically exact in principle, for computing the momentum- and frequency-resolved single-particle Green's function of a polaron at finite temperature. The method, which we refer to as the finite-temperature Green's function cluster expansion, combines two ingredients: the generalized Green's fun...
M. R. Carbone, Stepan Fomichev, Benedikt Kloss et al.· 1 citation
Evaluating frontier models on six widely used physics benchmarks and auditing them with experts suggests that current benchmarks substantially understate frontier models'ability to solve well-posed physics problems.
Ali Ansari, Hao-Ran Sun, Andy Zeyi Liu et al.· 0 citations
SemiGroup-JEPA (SG-JEPA), which extends the LeWorldModel framework by supplying the parameter governing the physics to the temporal model via action-conditioning and jointly training an encoder and predictor through an autoregressive latent rollout, is introduced.
This work develops a generative counterpart to the theory of benign overfitting and algorithmic regularization for overparameterized neural networks in the supervised lazy-training regime by studying denoising score matching in a vector-valued reproducing kernel Hilbert space with an inner-product kernel.
Hugo Latourelle-Vigeant, Sinho Chewi, Aram-Alexandre Pooladian et al.· 2 citations· ⚡1
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