R. Moazzemi

One-Loop Quantum Correction to the Kink Mass in a Lorentz-Violating Scalar Field Theory

We study the radiative correction to the mass of the $(1+1)$-dimensional $\lambda\phi^4$ kink in the presence of an irreducible, spacelike Lorentz-violating interaction. The Lorentz-violating operator is chosen as $-\frac12 c\phi^2(u\!\cdot\!\partial\phi)^2$ with $u^\mu=(0,1)$, which is the lowest-order single-scalar o...