Ayan Mukhopadhyay

TL;DR: It is shown that even when there is a Fermi surface with well-defined quasiparticle excitations, the collective excitations can behave very differently from Landau's theory.

TL;DR: In this article, the Navier-Stokes equation is covariantized under the full infinite dimensional Galilean Conformal Algebra (GCA), such that it reduces to the usual Navier Stokes equation in an inertial frame.

TL;DR: In this paper, the authors present an explicit approach that allows us to reconstruct exact four-dimensional Einstein spacetimes which are algebraically special with respect to Petrov's classification.

TL;DR: In this article, it was shown that the Boltzmann equation has very special solutions which could be functionally completely determined in terms of the energy-momentum tensor alone, and that these conservative solutions form the universal sector dual to pure gravity at strong coupling and large N. They also showed that conservative solutions should also exist when we refine this kinetic description to go closer to the exact microscopic theory or even move away from the regime of weak coupling so that no kinetic description could be employed.

TL;DR: In this paper, the holographic correspondence can be reformulated as a generalisation of the Wilsonian RG flow in a strongly interacting large $N$ quantum field theory, where the background metric and external sources become effectively dynamical reproducing the dual classical gravity equations in one higher dimension.