Carol Cuesta-Lazaro and Chirag Modi
IAIFI Fellow - AstroAI
Learning The Universe (LtU)
TNG50
Image credit: Sarah Jeffreson
Image credit: Lehman Garrison, AbacusSummit
Physics Simulator
Neural Network
Hybrid Model
Nbody
Slow
Non-differentiable
Particle mesh
Accurate
Fast
Differentiable
Missing small scales
Nbodyify
Fast
Differentiable
Accurate
"Nbodyify: adaptive mesh corrections for PM simulations" Carolina Cuesta-Lazaro, Chirag Modi (in prep)
Gravitational evolution ODE
Particle-mesh
Hybrid Simulator
Density
Gravitational Potential
1. CNN
2. Read features at position using attention
3. Compute correction to force
4. Run corrected simulation
Power Spectrum
Cross correlation
Power Spectrum
Cross correlation
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