%0 Generic %1 citeulike:12387514 %A Ferreira, Ricardo J. Z. %A Jain, Rajeev K. %A Sloth, Martin S. %D 2013 %K imported %T Inflationary Magnetogenesis without the Strong Coupling Problem %U http://arxiv.org/abs/1305.7151 %X The simplest gauge invariant models of inflationary magnetogenesis are known to suffer from the problems of either large back reaction or strong coupling, which make it difficult to self-consistently achieve cosmic magnetic fields from inflation with a field strength larger than \$10^-32\$ Gauss today on the \$\Mpc\$ scale. Such a strength is insufficient to act as seeds for the galactic dynamo effect, which requires a magnetic field larger than \$10^-20\$ Gauss. In this paper we propose a new simple model, which avoids both the strong coupling and the back reaction problems, and can lead to cosmic magnetic fields from inflation as large as about \$10^-16\$ Gauss today on the \$\Mpc\$ scale, thus improving the previous result by 16 orders of magnitude. In the scenario presented here, the coupling function which breaks the conformal invariance of electromagnetism is non-monotonic with sharp features avoiding previous back reaction and strong coupling constraints.

@misc{citeulike:12387514, abstract = {The simplest gauge invariant models of inflationary magnetogenesis are known to suffer from the problems of either large back reaction or strong coupling, which make it difficult to self-consistently achieve cosmic magnetic fields from inflation with a field strength larger than \$10^{-32}\$ Gauss today on the \$\Mpc\$ scale. Such a strength is insufficient to act as seeds for the galactic dynamo effect, which requires a magnetic field larger than \$10^{-20}\$ Gauss. In this paper we propose a new simple model, which avoids both the strong coupling and the back reaction problems, and can lead to cosmic magnetic fields from inflation as large as about \$10^{-16}\$ Gauss today on the \$\Mpc\$ scale, thus improving the previous result by 16 orders of magnitude. In the scenario presented here, the coupling function which breaks the conformal invariance of electromagnetism is non-monotonic with sharp features avoiding previous back reaction and strong coupling constraints.}, added-at = {2019-03-25T08:20:55.000+0100}, archiveprefix = {arXiv}, author = {Ferreira, Ricardo J. Z. and Jain, Rajeev K. and Sloth, Martin S.}, biburl = {https://www.bibsonomy.org/bibtex/2583d1834577d07e62c1514c8a764e47a/ericblackman}, citeulike-article-id = {12387514}, citeulike-linkout-0 = {http://arxiv.org/abs/1305.7151}, citeulike-linkout-1 = {http://arxiv.org/pdf/1305.7151}, day = 30, eprint = {1305.7151}, interhash = {28033011afb25d671a9da949283821ae}, intrahash = {583d1834577d07e62c1514c8a764e47a}, keywords = {imported}, month = may, posted-at = {2013-06-03 03:51:00}, priority = {2}, timestamp = {2019-03-25T08:20:55.000+0100}, title = {{Inflationary Magnetogenesis without the Strong Coupling Problem}}, url = {http://arxiv.org/abs/1305.7151}, year = 2013 }