|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Releasing scalar fields: cosmological simulations beyond the static approximation
If you have a question about this talk, please contact Dr Joan Camps.
Several extensions of General Relativity and high energy physics include scalar fields as extra degrees of freedom. In the search for predictions in the non-linear regime of cosmological evolution, the community makes use of numerical simulations in which the quasi-static limit is assumed when solving the equation of motion of the scalar field. In an effort to assess the reliability of the static approximation, I am developing new algorithms which are being incorporated into a new N-body code that was written from scratch to study modified gravities. I will present the method, and show results obtained from non-static simulations in the context of the symmetron model. These simulations show striking differences with respect to the commonly used quasi-static approximation. This novel procedure reveals new physical properties of the scalar field and concealed astrophysical phenomena which were hidden in the old approach.
This talk is part of the DAMTP Friday GR Seminar series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsCambridge Bibliographical Society Signal Processing and Communications Laboratory Seminars Division F Financial Modelling Group
Other talksObject handling session Intra-tumour heterogeneity in human glioblastoma. Cambridge Statistics Clinic Easter IV Transient responses of the Southern Ocean to climate change TBA On the convergence of Adaptive sequential Monte Carlo Methods