Stability of string defects in models of non-Abelian symmetry breaking

Nonlocal Regularization of Abelian Models with Spontaneous Symmetry Breaking

We demonstrate how nonlocal regularization is applied to gauge invariant models with spontaneous symmetry breaking. Motivated by the ability to find a nonlocal BRST invariance that leads to the decoupling of longitudinal gauge bosons from physical amplitudes, we show that the original formulation of the method leads to a nontrivial relationship between the nonlocal form factors that can appear ...

Spontaneous Symmetry Breaking in Non Abelian Gauge Theories

This term paper explores the phenomenon of spontaneous symmetry breaking in systems with non-abelian gauge symmetry. The most famous example comes from the standard model of particle physics, wherein symmetry breaking is responsible for the masses of the W and Z bosons and the corresponding short range of the weak nuclear force. The electroweak theory will be discussed as well as a more ambitio...

Spontaneous Symmetry Breaking in the Non-Abelian Anyon Fluid

We study the theory of non-relativistic matter coupled to the non-Abelian U(2) Chern-Simons gauge field in (2+1) dimensions. We adopt the mean field approximation in the current-algebra formulation already applied to the Abelian anyons. We first show that this method is able to describe both “boson-based” and “fermion-based” anyons and yields consistent results over the whole range of fractiona...

Symmetry Breaking in String Theory

In this paper we discuss symmetry breaking in string theory. Spacetime symmetries are implemented as inner automorphisms of the underlying superconformal algebra. Conserved currents generate unbroken spacetime symmetries. As we deform the classical solutions of the string equations of motion, the deformed currents continue to generate spontaneously broken symmetries eventhough they cease to com...

Symmetry Breaking and Defects