by Robert J. Hardwick

Infra-Red (IR) resummation for correlation functions during inflation using the stochastic formalism.

The code now supports multiple test and non-test (inflationary) fields.

If you use the code please cite https://arxiv.org/abs/1803.03521 where the numerical solver is a modification to the improved Euler scheme based on https://arxiv.org/abs/1210.0933.

To fork and use the code, simply type into the terminal: git clone https://github.com/umbralcalc/nfield.git

For background on why a QFT on curved backgrounds can here be treated as stochastic, here is one reference. In fact, this is one consequence of the quantum-to-classical transition of vacuum fluctuations during inflation.

New features coming soon, including: the Standard Model Higgs, Beyond the Standard Model couplings,...etc..

For more information on use please see the source code: https://github.com/umbralcalc/nfield