American University of Beirut Physics Department Invites you to the PhD Thesis Defense entitled Supersymmetric Massive Gravity and Dark Matter By Ola Hosseiky Malaeb Higgs massive gravity was formulated by using four scalar fields with global Lorentz symmetry. Once these scalar fields take a vacuum expectation value, diffeomorphism invariance is broken spontaneously and then the graviton acquires mass. The question is what we will get by supersymmetrizing this model. We formulate the supersymmetric case by using instead four chiral superfields with global Lorentz symmetry. Similar to the bosonic case, diffeomorphism invariance and local supersymmetry are broken spontaneously once the scalar components of the chiral multiplets acquire a vacuum expectation value. We will end up with a massive spin-2 field, two massive spin-3/2 fields and a massive vector in the broken phase. This is similar to what we have for N = 2 Supergravity, but the two gravitinos obtained have different masses. This composes the first part of the work. For the second part, we construct the Hamiltonian of Mimetic Gravity. We analyze the equations of motion and check that we end up with the same number of equations as in general relativity. Also, Poisson brackets are computed to prove closure. Date: Thursday, November 27, 2014 Time: 3:00 p.m. Place: Auditorium B102, Issam Fares Institute
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