Conveners
W3-2 Frontiers in Theoretical Physics I (DTP) | Frontières en physique théorique I (DPT)
- Robert Spekkens (Perimeter Institute for Theoretical Physics)
Does our world respect causality at all energy scales? We explore constraints on gravitational dynamics which stem from this assumption. Parameterizing long-distance effects of possible new heavy particles using effective field theory (EFT), we study causality of 2 to 2 scattering processes. Due to its energy growth, the gravitational force turns out to be particularly difficult to modify....
Dr. Stephen Hawking’s derivation of the eponymous Hawking radiation marked a significant step forward in the ongoing explorations into quantum theories of gravity. However, despite the significance of this work, higher order quantum corrections to the energy flux have not been calculated in most part due to the difficulty of such QFT calculations in curved space. To avoid this, we make use of...
I demonstrate that a de Broglie wave of a particle in a gravitational field turns towards the region of a smaller gravitational potential, causing the particle to fall. This turning is caused by clocks running slower in the smaller potential. I use the analogy of ocean waves that are slower in shallower water and turn towards beaches. This approach explains the free fall qualitatively and...
To create high-fidelity Cosmic Microwave Background (CMB) maps, current component separation methods rely on availability of information on different foreground components, usually through multi-band frequency coverage of the instrument. Internal linear combination (ILC) methods provide an unbiased estimators for CMB which are easy to implement, but component separation quality crucially...
