Matt Dobbs

Physics Department McGill University Ernest Rutherford Physics Building 3600 University Street Montréal, QC Canada   H3A 2T8 Téléphone : 514-398-6500 Télécopieur : 514-398-8434 Courriel: Matt.Dobbs@McGill.ca Web: http://mcgillcosmology.ca/ Bureau : 340

Champ de recherche : Observational Cosmology, Instrumentation, Cosmic Microwave Background Radiation

Description du projet de recherche :

My research aims to improve our understanding of the fundamental constituents of the universe – including its origin, history, and fate – as well as providing new insight into the early universe, where the laws of particle physics and cosmology intersect. At McGill my group is building novel instrumentation and experiments to explore the early universe with mm-wavelength observations of the Cosmic Microwave Background (CMB) radiation.

The CMB polarization is one of the few tools we know of to probe physics at inflationary energy scales, where grand unified theories may manifest themselves. At McGill, we are building the readout system for two new experiments called EBEX and POLARBEAR that may unveil the signature of inflationary gravity waves using the CMB polarization.

Another fundamental unknown is the nature of Dark Energy, which presently accounts for about 70% of the energy density in the universe. I am involved with two experiments, APEX-SZ and the South Pole Telescope, that use a subtle distortion of the CMB from Galaxy Clusters called the Sunyaev-Zel'dovich effect to measure the expansion history of the universe and gain new information about Dark Energy.

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