Yusuke Nishida (Tokyo Tech.) Nonrelativistic conformality and hydrodynamics I will review the conformal invariance in nonrelativistic systems and its physical consequences relevant to ultracold atom physics. In particular, I will show that the conformal invariance even constrains how the spacetime-dependent scattering length enters hydrodynamic equations, which is found to be useful as a probe of the bulk viscosity. Recent progress on the bulk viscosity regarded as contact correlation will also be discussed.