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Pedagogical and Real Physics,ly discussed the problems of relating how we teach physics and theoretical physics to how we actually carry out physics in a research context. In my experience, these are rather different activities. To celebrate Paddy’s 60th birthday, I expand upon this theme, giving some examples to illustrate the

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A Local Stress Tensor for Gravity Fields,field of static spherical systems can be deduced from natural axioms that we state. The result demonstrates that in these cases the energy density in both field and matter can be deduced from the spatial metric but not from the gravitational potential. We demonstrate that although the total energy c

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Emergence of Gravity and RG Flow,uations of gravity themselves hold the key to understanding their holographic origin. I discuss how this can be realised by reformulating Einstein’s equations in AdS as a non-perturbative RG flow that further leads to a new approach towards constructing strongly interacting QFTs. For a concrete demo

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https://doi.org/10.1057/9780230377776ew properties of Einstein–Hilbert action which might have been unnoticed earlier in the literature. Before concluding with future prospects and discussions, we will perform a general analysis of the boundary term of Einstein–Hilbert action for null surfaces as well.

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