Electric-magnetic duality and the conditions of inflationary magnetogenesis Export

@article{Giovannini:2009xa, abstract = {The magnetogenesis scenarios triggered by the early variation of the gauge coupling are critically analyzed. In the absence of sources, it is shown that the electric and magnetic power spectra can be explicitly computed by means of electric-magnetic duality transformations. The remnants of a pre-inflationary expansion and the reheating process break explicitly electric-magnetic duality by inducing Ohmic currents. The generation of large-scale magnetic field and the physical distinction between electric and magnetic observables stems, in this class of models, from the final value reached by the conductivity of the plasma right after inflation. Specific numerical examples are given. The physical requirements of viable magnetogenesis scenarios are spelled out.}, archivePrefix = {arXiv}, author = {Giovannini, Massimo}, citeulike-article-id = {6072742}, citeulike-linkout-0 = {http://arxiv.org/abs/0911.0896}, citeulike-linkout-1 = {http://arxiv.org/pdf/0911.0896}, day = {4}, eprint = {0911.0896}, keywords = {duality, generation, inflation, magnetic-fields}, month = {Nov}, posted-at = {2009-11-09 16:54:23}, priority = {2}, title = {Electric-magnetic duality and the conditions of inflationary magnetogenesis}, url = {http://arxiv.org/abs/0911.0896}, year = {2009} }

TY - JOUR ID - Giovannini:2009xa L3 - citeulike-article-id:6072742 N2 - The magnetogenesis scenarios triggered by the early variation of the gauge coupling are critically analyzed. In the absence of sources, it is shown that the electric and magnetic power spectra can be explicitly computed by means of electric-magnetic duality transformations. The remnants of a pre-inflationary expansion and the reheating process break explicitly electric-magnetic duality by inducing Ohmic currents. The generation of large-scale magnetic field and the physical distinction between electric and magnetic observables stems, in this class of models, from the final value reached by the conductivity of the plasma right after inflation. Specific numerical examples are given. The physical requirements of viable magnetogenesis scenarios are spelled out. TI - Electric-magnetic duality and the conditions of inflationary magnetogenesis KW - duality KW - generation KW - inflation KW - magnetic-fields AU - Giovannini, Massimo PY - 2009/Nov/04/ UR - http://arxiv.org/abs/0911.0896 ER -