Prof.
Ben Wandelt
(Flatiron)
08/09/2019, 15:50
The hunt for CMB polarization B-modes is on. Many obstacles lie along the way besides the obvious cost driver of high sensitivity. Instrumental, atmospheric, and astrophysical systematics are challenges that can be addressed with sophisticated analysis techniques. I will advertise a series of recent results that break through several of these obstacles: optimal and efficient B-mode...
Prof.
Xiao-Dong Li
(SYSU)
08/09/2019, 16:35
We use the deep CNN to map the complex, non-linear cosmic large-scale structure to the underlying cosmological parameters $\Omega_m$, $\sigma_8$. In the ideal case, we can achieve a constraint 6 times better than the Planck CMB results, just using a $(256 \rm Mpc/h)^3$ box of dark matter density field with 2 Mpc/h resolution. Machine learning may play a very important role in the future...
Prof.
Taotao Qiu
(CCNU)
08/09/2019, 16:50
In this talk, I will utilize the effective field theory approach to explore the general features of cosmological models in the early universe that give rise to small tensor-to-scalar ratio, which is favored by current (and probably future) observations.
