• Corpus ID: 248693503

Chirp asymmetry as an analogue of Leptogenesis

@inproceedings{Commons2022ChirpAA,
  title={Chirp asymmetry as an analogue of Leptogenesis},
  author={Matthew Commons and Nicole Abend and Ian M. Jones and Jonathon T. George and Aaron Weiser and Michael Crescimanno},
  year={2022}
}

• Matthew Commons, N. Abend, +3 authors M. Crescimanno
• Published 11 May 2022
• Physics

The effective conjugation symmetry that arises in the rotating wave frame is the analogue of the discrete symmetry in field theory. Breaking this effective conjugation symmetry leads to asymmetries between up- and down- chirped excitation in quantum optical systems. We use semiclassical quantum optics theory to describe these processes and experimentally characterize the asymmetry in the optical response in chirped, two-color saturated absorption spectroscopy (SAS) in an atomic vapor cell. Doing so demonstrates a theoretical and phenomenological correspondence to the simplest model of leptogenesis, the process by which our universe purportedly went from equal amounts of matter and antimater to its present matter excess. The understanding of the asymmetry as due to a broken discrete symmetry under chirp appears to illuminate the underlying processes responsible for other chirp asymmetries previously noted in the literature. linear rise at slow chirp speed plateaus and decreases at high chirp speed due to the fact that in these simulations there is a fixed timescale for the production of what serves as the optical analogue of the ’heavy neutrino’ in the leptogenesis model; if the chirp rate is too fast then fewer of those states are created in the early stages of the chirp. Inset shows the intrinsic asymmetric lineshape used in that evaluation of the two-level population model