Dark photon -- Assisted Primordial Magnetogenesis
Debottam Nandi (VIT Chennai), Debajyoti Choudhury (University of Delhi)

TL;DR
This paper proposes a minimal mechanism involving dark photons coupled with standard photons to generate cosmic magnetic fields, overcoming limitations of previous models and potentially explaining unresolved cosmic mysteries.
Contribution
It introduces a novel dark photon coupling mechanism for primordial magnetogenesis that avoids strong-coupling and backreaction issues present in earlier theories.
Findings
Coupling dark photons with standard photons can produce adequate magnetic fields.
The mechanism circumvents the strong-coupling and backreaction problems.
It offers potential insights into unresolved cosmic mysteries.
Abstract
Magnetic fields observed across cosmic scales are difficult to explain within conventional physics. A primordial origin is, thus, often assumed. While a nonminimal coupling of the inflaton with the electromagnetic field could theoretically generate magnetic fields of about G, this approach faces significant issues, including strong-coupling and backreaction problems. ``Dark photons", arising naturally in hidden-sector extensions of the Standard Model, provide a well-motivated framework for addressing various cosmic as well as particle physics issues. We demonstrate that coupling dark photons with standard ones can result in adequate magnetogenesis without the limitations of existing models. This minimal mechanism may also provide insights into unresolved cosmic mysteries.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
