Magnetic fields, strings and cosmology
نویسنده
چکیده
To appear in the book String theory and fundamental interactions published on the occasion of the celebration of the 65th birthday of Gabriele Veneziano, 1 Half a century of large-scale magnetic fields 1.1 A premise The content of the present contribution is devoted to large-scale magnetic fields whose origin, evolution and implications constitute today a rather intriguing triple point in the phase diagram of physical theories. Indeed, sticking to the existing literature (and refraining from dramatic statements on the historical evolution of theoretical physics) it appears that the subject of large-scale magnetization thrives and prosper at the crossroad of astrophysics, cosmology and theoretical high-energy physics. Following the kind invitation of Jnan Maharana and Maurizio Gasperini, I am delighted to contribute to this set of lectures whose guideline is dictated by the inspiring efforts of Gabriele Veneziano in understanding the fundamental forces of Nature. My voice joins the choir of gratitude proceeding from the whole physics community for the novel and intriguing results obtained by Gabriele through the various stages of his manifold activity. I finally ought to convey my personal thankfulness for the teachings, advices and generous clues received during the last fifteen years.
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