Physics

It will be argued that essentially all the deep concepts of perturbative quantum field theory could have been discovered in non-quantum (classical) field theories. These include Feynman diagrams, effective actions, divergences, regularization...

Long-range entangled qubits (or quantum spins) from new states of matter whose low energy effective theory realize topological quantum field theories. Those topologically ordered states of purely bosonic qubits can produce emergent gauge theory and...

AdS/CFT is a duality relating the degrees of freedom in a D dimensional bulk gravity theory to a (D-1) dimensional theory living on the boundary.
I will argue that in fact the boundary theory contains only a subset of the bulk observables. For each...