Dec 11 – 15, 2023
Tsung-Dao Lee Institute
Asia/Shanghai timezone

Primordial fossils as a probe of parity violation

Dec 11, 2023, 5:20 PM
Hall # 1

Hall # 1

Contributed talk in mini symposium Cosmology with large-scale structure


Hongming Zhu (NAOC)


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


Prof. Ue-Li Pen (ASIAA)

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