no code implementations • 9 Dec 2020 • Enrico Cannizzaro, Andrea Caputo, Laura Sberna, Paolo Pani
We investigate the linear dynamics of an electromagnetic field propagating in curved spacetime in the presence of plasma.
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Phenomenology
2 code implementations • 8 Sep 2020 • Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma, Maxim Pospelov, Joshua T. Ruderman, Alfredo Urbano
Within the context of a kinetically mixed dark photon, we demonstrate how resonant dark photon-to-photon conversions can imprint distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
1 code implementation • 18 Jun 2020 • Ciaran A. J. O'Hare, Andrea Caputo, Alexander J. Millar, Edoardo Vitagliano
To do this we consider a previously neglected component of the solar axion flux at sub-keV energies arising from the conversion of longitudinal plasmons.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
2 code implementations • 14 Apr 2020 • Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma, Joshua T. Ruderman
A dark photon may kinetically mix with the Standard Model photon, leading to observable cosmological signatures.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
2 code implementations • 12 Feb 2020 • Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma, Joshua T. Ruderman
A dark photon may kinetically mix with the ordinary photon, inducing oscillations with observable imprints on cosmology.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
