|Date||March 18, 2013||Time||3:30 - 5:00 pm|
|Location||Baylor Sciences Building, Room A.202|
General Relativity as an Effective Field of a
To obtain a power-counting renormalizable theory of gravity, we introduce an extra tensor field, and assume that it is very heavy. This enables us to use the techniques of the effective field theory to eliminate the extra field in the infrared. Except one term we can reproduce Einstein-Hilbert lagrangian to the third order if the heavy particle is a vector field. We show that if instead we utilize a rank three tensor, the effective lagrangian is identical to the Einstein-Hilbert one at least up to the third order and, hence, its symmetry runs from the Poincare at high energies to the general covariance at low energies.
For More information, please contact: Dr. Jay Dittmann 254-710- 2275
|Publisher||Department of Physics|
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