Theoretical Astroparticle Physics/

Riccardo Catena

Chalmers University of Technology

May 20, 2016 Outline

I Basic research questions in Astroparticle Physics and Cosmology I Sweden’s response to these research questions

I Summary Astroparticle Physics

I Astroparticle Physics is the cross-disciplinary research area at the interface of , , and Cosmology

Astroparticle The basic questions of Astroparticle Physics (ASPERA/ApPEC roadmap)

1. What is the Universe made of? In particular: What is ? 2. Do protons have a finite life time? 3. What are the properties of neutrinos? What is their role in cosmic evolution? 4. What do neutrinos tell us about the interior of the Sun and the Earth, and about Supernova explosions? 5. What is the origin of cosmic rays? What is the view of the sky at extreme energies? 6. Can we detect gravitational waves? What will they tell us about violent cosmic processes and about the nature of gravity Selected questions in Cosmology

I What is ? I Is General Relativity valid on large cosmological scales? I What triggered the ? I How to exploit precision Cosmology (, Euclid, etc. . . )? I ... Sweden’s response to these research questions Stockholm University

I Dark matter - Lars Bergstr¨om - Joakim Edsj¨o - Katherine Freese - Doug Spolyar

I Dark energy & modified gravity - Edvard M¨ortsell - Fawad Hassan - Kjell Rosquist - Bo Sundborg KTH & Nordita

I Neutrinos and dark matter (KTH) - Mattias Blennow - Juan Herrero Garcia - Sushant Raut

I String Cosmology (Nordita) - Tomi Koivisto

I Scientific programs (Nordita) - Dark Matter Distribution in the Era of Gaia (2016) - Advances in Theoretical Cosmology in Light of Data (2017) Lund University

I Gaia - Lennart Lindegren - David Hobbs - Daniel Michalik

I Dark matter & dark energy - Roman Pasechnik Uppsala University

I Dark matter distribution & Gaia - Ulrike Heiter - Karin Lind - Andreas Korn - Erik Zackrisson

I String Cosmology - Ulf Danielsson - Giuseppe Dibitetto Chalmers University of Technology

I Dark matter phenomenology & distribution - Riccardo Catena - Martin Krauss

I Nuclear physics for dark matter detection - Christian Forssen - Daniel Gazda Opportunities for cooperation between research centres

I Swedish Research Council I Knut and Alice Wallenberg Foundation I ...

I Cooperation also favored by proximity Summary

I Sweden hosts the expertise to address the key research questions of Astroparticle Physics and Cosmology I I have reviewed current scientific efforts in the main Swedish research centres

I Prospects for cooperation among research centres in Sweden are promising