High Energy Theory Seminar

In this talk, I'll review the construction of gravitational constraints and of the corresponding phase space along generalized Horizons.I will focus my expose on the study of the Raychauduri Constraint and its quantization, which describes the dynamics of quantum null rays.I will present a detailed construction of the null Ray phase space and the localized gauge-invariant observables through the process of internal dressing anchored on edge modes.We will see how the edge mode symplectic structure can be understood in terms of the integration of  degrees of freedom complementary tochosen region and how the gauge invariant observables include the covariant area element as a generator of reorientation of the frame. I will also describe element of the quantization procedure of the gravitational constraint which can be achieved using two essential new tools: First the construction of a background independent  version of the normal ordering and then the reabsorption of the quantum anomaly into an effective deformation of the gravitational phase space.If time permits, I'll comment on  some new results concerning the quantization of field theoretical reference frames. 

The talk is in 469 Lauritsen.

Contact [email protected] for Zoom information.