GitHub - xif-fr/BrownianMotion: Simulation of a particle in a 2D Lennard-Jones gas for studying brownian motion, the Langevin equation, and non-equilibrium fluctuation-dissipation relations. Langevin simulation for studying first passage time, survival probabilities under various resetting schemes.

Instructions

python 3 with numpy, scipy, matplotlib, pandas and cffi modules installed
Jupyter
SFML

Compile the simulation core and the CFFI module with make brownian-motion-pysimul (with SFML) or make brownian-motion-pysimul-headless (without display)
Run simulation with the Jupyter notebook main.ipynb

Compile the simulation core and the CFFI module with make langevin-survival-pysimul after adjusting the various flags in langevin-survival.cpp
For computing the survival probabilities, run the simulation with one of the Jupyter notebook in langevin-survival/
For computing the MFPT, run the simulation with langevin-mfpt/langevin-ft-automated.ipynb

Name		Name	Last commit message	Last commit date
Latest commit History 66 Commits
Simul.xcodeproj		Simul.xcodeproj
dynmol-diffus-results		dynmol-diffus-results
langevin-mfpt		langevin-mfpt
langevin-reset		langevin-reset
langevin-survival		langevin-survival
DejaVuSansMono.ttf		DejaVuSansMono.ttf
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
Simul-Info.plist		Simul-Info.plist
cffi-build.py		cffi-build.py
cffi-proto.h		cffi-proto.h
common.py		common.py
exp-data-diffus-analysis.ipynb		exp-data-diffus-analysis.ipynb
langevin-generate.cpp		langevin-generate.cpp
langevin-survival-simplified-2d.cpp		langevin-survival-simplified-2d.cpp
langevin-survival.cpp		langevin-survival.cpp
langevin.cpp		langevin.cpp
langevin.ipynb		langevin.ipynb
main.cpp		main.cpp
main.ipynb		main.ipynb
pysimul-common.cpp		pysimul-common.cpp
pysimul-common.h		pysimul-common.h
pysimul-util.cpp		pysimul-util.cpp
pysimul.py		pysimul.py
sfml_c01.hpp		sfml_c01.hpp
utils.py		utils.py
vecs2.cpp		vecs2.cpp
vecs2.hpp		vecs2.hpp