期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2018/01/023
关键词
cosmological perturbation theory; inflation
资金
- Royal Society University Research Fellowship
- Queen Mary University of London
- Frederick Perren Fund of the University of London
- Science and Technology Facilities Council [ST/P000592/1, ST/M001202/1] Funding Source: researchfish
- STFC [ST/P000592/1, ST/M001202/1] Funding Source: UKRI
We extend the transport framework for numerically evaluating the power spectrum and bispectrum in multi-field inflation to the case of a curved field-space metric. This method naturally accounts for all sub- and super-horizon tree level effects, including those induced by the curvature of the field-space. We present an open source implementation of our equations in an extension of the publicly available PyTransport code. Finally we illustrate how our technique is applied to examples of inflationary models with a non-trivial field-space metric.
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