{"270281":{"#nid":"270281","#data":{"type":"event","title":"Particle Physics and Cosmology from Almost Commutative Manifolds","body":[{"value":"\u003Ch6\u003EJoint School of Mathematics and School of Physics CRA Seminar: Dr. Mairi Sakellariadou, King\u0027s College, London\u003Cbr \/\u003E\u003C\/h6\u003E\u003Cp\u003EThe unification of the four fundamental forces remains one of the most important issues in theoretical particle physics. In this talk, I will first give a short introduction to Non-Commutative Spectral Geometry, a bottom-up approach that unifies the (successful) Standard Model of high energy physics with Einstein\u0027s General theory of Relativity. The model is built upon almost-commutative spaces and I will discuss the physical implications of the choice of such manifolds. I will show that even though the unification has been obtained only at the classical level, the doubling of the algebra may incorporate the seeds of quantization. I will then briefly review the particle physics phenomenology and highlight open issues and current proposals. In the last part of my talk, I will explore consequences of the Gravitational-Higgs part of the spectral action formulated within such almost-commutative manifolds. In particular, I will study modifications of the Friedmann equation, propagation of gravitational waves and the onset of inflation. I will show how current measurements (Gravity Probe, pulsars, and torsion balance) can constrain free parameters of the model. I will conclude with a short discussion on open questions.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Particle Physics and Cosmology"}],"uid":"27664","created_gmt":"2014-01-22 15:12:37","changed_gmt":"2016-10-08 02:06:32","author":"Alison Morain","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2014-01-31T15:00:00-05:00","event_time_end":"2014-01-31T16:00:00-05:00","event_time_end_last":"2014-01-31T16:00:00-05:00","gmt_time_start":"2014-01-31 20:00:00","gmt_time_end":"2014-01-31 21:00:00","gmt_time_end_last":"2014-01-31 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"126011","name":"School of Physics"}],"categories":[],"keywords":[{"id":"84531","name":"Particle Physics and Cosmology"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003E\u003Ca href=\u0022mailto:alison.morain@physics.gatech.edu\u0022\u003Ealison.morain@physics.gatech.edu\u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}