Search Results for author: Nayantara Mudur

Found 6 papers, 3 papers with code

Diffusion-HMC: Parameter Inference with Diffusion Model driven Hamiltonian Monte Carlo

1 code implementation8 May 2024 Nayantara Mudur, Carolina Cuesta-Lazaro, Douglas P. Finkbeiner

This work uses a single diffusion generative model to address these interlinked objectives -- as a surrogate model or emulator for cold dark matter density fields conditional on input cosmological parameters, and as a parameter inference model that solves the inverse problem of constraining the cosmological parameters of an input field.

Image Generation

Quantum Many-Body Physics Calculations with Large Language Models

no code implementations5 Mar 2024 Haining Pan, Nayantara Mudur, Will Taranto, Maria Tikhanovskaya, Subhashini Venugopalan, Yasaman Bahri, Michael P. Brenner, Eun-Ah Kim

We evaluate GPT-4's performance in executing the calculation for 15 research papers from the past decade, demonstrating that, with correction of intermediate steps, it can correctly derive the final Hartree-Fock Hamiltonian in 13 cases and makes minor errors in 2 cases.

Cosmological Field Emulation and Parameter Inference with Diffusion Models

no code implementations12 Dec 2023 Nayantara Mudur, Carolina Cuesta-Lazaro, Douglas P. Finkbeiner

Cosmological simulations play a crucial role in elucidating the effect of physical parameters on the statistics of fields and on constraining parameters given information on density fields.

Probabilistic reconstruction of Dark Matter fields from biased tracers using diffusion models

1 code implementation14 Nov 2023 Core Francisco Park, Victoria Ono, Nayantara Mudur, Yueying Ni, Carolina Cuesta-Lazaro

Galaxies are biased tracers of the underlying cosmic web, which is dominated by dark matter components that cannot be directly observed.

Can denoising diffusion probabilistic models generate realistic astrophysical fields?

1 code implementation22 Nov 2022 Nayantara Mudur, Douglas P. Finkbeiner

In this work we investigate the ability of these models to generate fields in two astrophysical contexts: dark matter mass density fields from cosmological simulations and images of interstellar dust.

Denoising

Contrastive Similarity Matching for Supervised Learning

no code implementations24 Feb 2020 Shanshan Qin, Nayantara Mudur, Cengiz Pehlevan

We propose a novel biologically-plausible solution to the credit assignment problem motivated by observations in the ventral visual pathway and trained deep neural networks.

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