Two talks:

Zhuhai Li: Symmetry Break and Why we take Bumblebee Theory

Ref. 1: Gauge Field Theories: An Introduction with Applications

Ref. 2: Spontaneous Lorentz Violation, Nambu-Goldstone Modes, and Gravity

Ref. 3. Gravity with a dynamical preferred frame

Ref. 4. Backgrounds in gravitational effective field theory

Jianyuan Luo: Constraining Dark Matter using Neutron Stars

Ref. 1: Improved bounds on the bosonic dark matter with pulsars in the Milky Way

Ref. 2: Constraints on Scalar Asymmetric Dark Matter from Black Hole Formation in Neutron Stars

Ref. 3. Black Holes, White Dwarfs, and Neutron Stars: The Physics of Compact Objects