String Theory Seminars
Holographic Constraints On A Vector Boson
by Dr. Rakibur Rahman (Universite Libre de Bruxelles)
Wednesday, June 19, 2013
from
to
(Asia/Kolkata)
at Colaba Campus ( A304 )
at Colaba Campus ( A304 )
Description |
We show that holography poses non-trivial restrictions on various couplings of an interacting field. For a vector boson in the AdS Reissner- Nordstrom background, the dual boundary theory is pathological unless its electromagnetic and gravitational multipole moments are constrained. Among others, a generic dipole moment afflicts the dual CFT with superluminal modes, whose remedy bounds the gyromagnetic ratio in a range around the natural value g=2. We discuss the CFT implications of our results, and argue that similar considerations can shed light on how massive higher-spin fields couple to electromagnetism and gravity. |