Seminars & Lectures
| * TITLE | Pseudoscalar-Photon mixing in an expanding universe. | ||||||
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| * DATE / TIME | 2011-11-10, 4:pm, 503 conference room | ||||||
| * ABSTRACT | |||||||
| We establish the equation of motion of pseudoscalar particles coupled to an electromagnetic field in a classical gravitational background through the use of conformal time and flat geometry. We show that the expansion of the universe can lead to larger mixing than in a stationary universe. We also show that for a broad range of parameters, one can obtain resonance in mixing, i.e, a region where the mixing becomes maximum. |
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