Speaker
Hongming Zhu
(NAOC)
Description
The primordial vorticity and gravity wave leave anisotropic imprints in the large-scale structure, known as the primordial fossils. The primordial vector and tensor fossils are directly sensitive to parity violations in the early Universe. I will present a new method to generate parity violating initial conditions for cosmological simulations and show that the tidal estimators can separate the parity-odd signal from the nonlinearities generated in the cosmic evolution. This provides a new way to constrain parity violating signals using the large-scale structure traced by galaxies.
Primary author
Hongming Zhu
(NAOC)
Co-author
Prof.
Ue-Li Pen
(ASIAA)
