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Testing fundamental physics with astronomical observations

Claudio Llinares
Institute For Computational Cosmology, Durham University, UK

Abstract
Cosmologists have increasing interest in testing different gravitational theories in more and more accurate ways. Large effort is devoted to boost the precision of the meassurements of very well know observables such as correlation functions, redshift space distorsions, etc. While performing such experiments is indispensable, it is important to keep in mind that they may not be enough to rule out General Relativity, especially if standard and modified gravity theories are degenerated in this small set of observables. The only way in which we we can keep our hopes for detecting departures from GR is to study new alternative observables. I will discuss two examples: one in the context of galaxy surveys and the other in the much smaller scales associated to globular clusters. I will finish the talk by describing an alternative method for running the very large cosmological simulations that are required to develope this kind of tests.

2018 May 14, 11:30

IA/U.Lisboa
Faculdade de CiÍncias da Universidade de Lisboa (C6.1.25)
Campo Grande, 1749-016 Lisboa

Instituto de Astrof√≠sica e Ci√™ncias do Espa√ßo Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia