Séminaire / Seminar GReCO |
| « The Likelihood for Large-Scale Structure » |
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Giovanni Cabass |
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I derive, using the effective field theory of biased tracers,
the conditional likelihood for observing a specific tracer field given an underlying matter field. This likelihood is necessary for Bayesian-inference methods. I start from the assumption of Gaussian noise for the tracer field, and then discuss the impact of non-Gaussian noise (which includes the stochastic corrections to the tracer bispectrum) and of higher-derivative terms. I comment on how these corrections can affect the results of current applications of Bayesian inference. I also comment on possible extensions, with a particular eye towards the inclusion of primordial non-Gaussianity. |
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lundi 28 octobre 2019 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |