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arXiv · 1205.3069

On a family of (1+1)-dimensional scalar field theory models: kinks, stability, one-loop mass shifts

Alberto Alonso-Izquierdo·Juan Mateos-Guilarte
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Abstract

In this paper we construct a one-parametric family of (1+1)-dimensional one-component scalar field theory models supporting kinks. Inspired by the sine-Gordon and $\phi^4$ models, we look at all possible extensions such that the kink second-order fluctuation operators are Schr\"odinger differential operators with P\"oschl-Teller potential wells. In this situation, the associated spectral problem is solvable and therefore we shall succeed in analyzing the kink stability completely and in computing the one-loop quantum correction to the kink mass exactly. When the parameter is a natural number, the family becomes the hierarchy for which the potential wells are reflectionless, the two first levels of the hierarchy being the sine-Gordon and $\phi^4$ models.

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Alberto Alonso-Izquierdo, Juan Mateos-Guilarte. 2012-05-14. On a family of (1+1)-dimensional scalar field theory models: kinks, stability, one-loop mass shifts. https://doi.org/10.1016/j.aop.2012.04.014

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