On the Generation of the Electroweak Scale from Radiative Corrections

by Mr Ahmad Sadeghi (Sharif University of Technology)

Thursday 26 Nov 2015, 11:00 → 12:00 Asia/Tehran

Seminar room (School of Particles and Accelerators)

We study non-minimal coupling of a massless Higgs field to a higher-derivative theory of gravity. We find that in the Einstein frame the scalar potential is modified and the Higgs receives an effective field-dependent mass parameter such that it is dynamical and scans over a large range (from the Planck scale to almost zero). We compute the one-loop effective potential and we observe that the Higgs field develops a non-zero vacuum expectation value at a value parametrically much smaller than the UV scale. Furthermore, by computing the renormalization group improved effective potential we find that the generated electroweak vacuum is the global minimum of the potential.