Vector dark matter production from inflation with symmetry breaking

Hassan Firouzjahi

School of Astronomy, Institute of Research in Fundamental Sciences (IPM)

Abstract: We present a scenario of vector dark matter production from symmetry breaking at the end of inflation. The accumulated energy density associated with the quantum fluctuations of a dark gauge field plays the roles of the dark matter relic energy density today.  The inflaton is a real scalar field while a heavy complex scalar field, such as the waterfall of hybrid inflation, is charged under the dark gauge field. After the heavy field becomes tachyonic, rolling rapidly towards its global minima, the dark photon acquires a dynamical mass at the end of inflation.  The setup can generate the observed dark matter abundance with the reheat temperature of around $10^{12}$ GeV. The model predicts the formation of cosmic strings at the end of inflation with the tensions consistent with the CMB upper bounds.

یکشنبه 11 آبان 1399، ساعت 15:00

Sunday 1 November 2020 – 15:00 Tehran Time

اتاق سمینار مجازی –Virtual Seminar Room

https://vc.sharif.edu/ch/cosmology

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