Theory Seminar
Seminars are at 2pm in Room 179 CP Building unless otherwise indicated.
Theory Seminar: Hadron mass decomposition from lattice QCD simulation
Theory Seminar: Gauges and Holography in Higher Spin Duality
Conformal field theory at large central charge
Theory Seminar: Quark and Glue Spins of the Nucleon
Hall transport, angular momentum and Ward identities.
Recently, unexpected relations between unrelated physical quantities such as Hall viscosity, conductivity and angular momentum have been proposed for certain condensed matter systems with broken parity. We derive the quantum field theory Ward identities originated from area preserving as well as conformal transformations for relativistic as well as non-relativistic systems. The relations among these physical quantities depend on the symmetries of the system. A special cases yields the well known relation: Hall viscosity is half the angular momentum.
Theory Seminar: Relativistic Effective Field Theory and Parity-Odd Transport
We introduce a new 2+1 dimensional topological current that is identically conserved and whose charge is equal to the Euler character of the two dimensional spacelike foliations. The existence of this current allows us to introduce new Chern-Simons-type terms in the effective field theories describing relativistic quantum Hall states and (2+1) dimensional superfluids. In the quantum Hall case, this current provides the natural relativistic generalization of the Wen-Zee term, required to characterize the shift and Hall viscosity in quantum Hall systems. For the superfluid case this term is required to have nonzero Hall viscosity and to describe superfluids with non s-wave pairing.
Universal Hydrodynamics for Quantum Critical Points with Lifshitz scaling
symmetry.
Time Dependent Holography