Simulating the Big Bang
DEFROST is a numerical code for simulating preheating of the Universe after the end of the inflation. It is small, easy to modify, very fast, and fully instrumented for 3D visualizations. DEFROST was written by for his early Universe research. The source code is published and distributed under the terms of .
If you use DEFROST in your research, please cite (the preprint describing DEFROST internals and presenting simulations of chaotic preheating).
Download
- DEFROST v2.0: [ source code | README | ] (symplectic!)
- Dependencies: [ (required) | & (optional) | (visualization) ]
- (old) Silo library: [ source code | build notes | config patch | FC7 x86-64 binary | FC9 i386 binary ]
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Cool Movie of the Month
[ What's This? ] 3D volume render: Density ρ High quality 960x720 movie in H.264/MPEG-4 AVC (8Mb)
Preheating Models
- Chaotic Inflation: V(φ,ψ) = ½ m² φ² + ½ g² φ² ψ²
- Chaotic Inflation: V(φ,ψ) = ½ m² φ² + ½ σ φ ψ² + ¼ λ ψ⁴
More Preheating Codes
- by Gary Felder and Igor Tkachev: , (MPI version)
- by Jani Sainio: (GPU accellerated!)
- by Richard Easther, Hal Finkel, and Nathaniel Roth: (spectral code)
- by Zhiqi Huang: (symplectic/Runge-Kutta hybrid integrator, non-minimal coupling)
- by Jani Sainio: (symplectic integrator, GPU accellerated with CUDA, very cool!)
Modified by Andrei Frolov <frolov@sfu.ca> on 2025-11-12