Searching for Novel Objects in the Electroweak Theory
Abstract
We explore the HiggsGauge configuration space in the standard electroweak theory. We outline a general prescription that uses the nontrivial topology associated with the gauge group of the theory, to find known solutions of the Euclidean classical equations of motion and motivate the existence of novel ones. In Minkowski spacetime we present evidence for the existence of approximate breathers  longlived, spatially localized, temporally periodic configurations. We consider heavy fermion quantum fluctuations about static HiggsGauge configurations, and argue for the existence of stable fermionic solitons. These could resolve the fermion decoupling puzzle in chiral gauge theories. We describe our search for a fermionic soliton within a spherical ansatz, and discuss the quantum corrected sphaleron and the emergence of new barriers suppressing the decay of heavy fermions. Finally, we consider electroweak strings and how they could give rise to stable multiquark objects.
 Publication:

arXiv eprints
 Pub Date:
 April 2004
 arXiv:
 arXiv:hepth/0404234
 Bibcode:
 2004hep.th....4234K
 Keywords:

 High Energy Physics  Theory;
 High Energy Physics  Phenomenology
 EPrint:
 M.I.T. Ph.D Thesis