During Inflationary and Dark Energy epochs the Universe undergoes accelerated expansion. An ideal geometry for such an expansion is the de Sitter spacetime. In our Universe during inflation and dark energy, cosmological degrees of freedom arise because of deviations from de Sitter.
Due to the worldwide COVID-19 lockdown Boğaziçi Physics department has transferred their weekly departmental series, hosted by Prof. Can Kozcaz into a series of online open public seminars. It was a great honor to be part of this series with
Due to the worldwide COVID-19 lock down Monday Meetings was initiated by İ. Ceyhun Andaç, a PhD student at Istanbul Technical University and Universite Granoble Alpes, to come together and listen to each others works via an online platform. The
We discussed new directions considering wavefunction calculations on de Sitter with Dionysios Anninos and Paolo Benincasa who were also interested in our recent work on unitary representations at the late time boundary of de Sitter.
As our first concrete step we have identified boundary fields on de Sitter for scalar fields of various masses in terms of the irreducible representations of the (d+1)-dimensional de Sitter symmetry group SO(d+1,1). One can think of these irreducible representations as particles
On October 1st 2019, the project SymAcc, which receives funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 840709 started.