(Reverse) engineering vacuum alignment
- Creators
- Cheung, Clifford
- Thaler, Jesse
Abstract
In the presence of spontaneous symmetry breaking, the alignment of the vacuum with respect to the gauge group is often controlled by quadratically divergent operators in the low energy non-linear sigma model. In principle the magnitudes and signs of these operators can be changed by making different assumptions about the ultraviolet physics, but in practice all known ways of regulating these theories preserve the naïve vacuum alignment. We show that by ``integrating in'' different sets of heavy spin-one fields, it is possible to UV extend certain non-linear sigma models into two distinct UV insensitive theories. These UV extensions have identical low energy degrees of freedom but different radiative potentials, making it possible to engineer two different vacuum alignments for the original non-linear sigma model. Our construction employs "non-square" theory spaces which generically violate the common lore that the preferred vacuum alignment preserves the maximal gauge symmetry. By UV extending the SO(9)/(SO(4) × SO(5)) little Higgs model, we find a radiative potential that deviates from the naïve expectation but does not stabilize the correct vacuum for proper electroweak symmetry breaking.
Additional Information
© SISSA 2006. Received: May 9, 2006. Revised: July 1, 2006. Accepted: July 12, 2006. Published: August 10, 2006. We thank Nima Arkani-Hamed for inspiring this project and Howard Georgi, Can Kilic, and Aaron Pierce for constructive comments on the manuscript. This work is supported by the DOE under contract DE-FG02-91ER40654.Attached Files
Published - Clifford_Cheung_2006_J._High_Energy_Phys._2006_016.pdf
Accepted Version - 0604259.pdf
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Additional details
- Eprint ID
- 96547
- Resolver ID
- CaltechAUTHORS:20190619-094200073
- DE-FG02-91ER40654
- Department of Energy (DOE)
- Created
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2019-06-19Created from EPrint's datestamp field
- Updated
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2022-07-12Created from EPrint's last_modified field