Wide Class of Logarithmic Potentials with Power-Tower Kink Tails

Abstract

We present a wide class of potentials which admit kinks and corresponding mirror kinks with either a power law or an exponential tail at the two extreme ends and a power-tower form of tails at the two neighbouring ends, i.e. of the forms $ette$ or $pttp$ where $e, p$ and $t$ denote exponential, power law and power-tower tail, respectively. We analyze kink stability equation in all these cases and show that there is no gap between the zero mode and the beginning of the continuum. Finally, we provide a recipe for obtaining logarithmic potentials with power-tower kink tails and estimate kink-kink interaction strength.