K-field kinks in two-dimensional dilaton gravity
arXiv:2108.10166 · doi:10.1016/j.physletb.2021.136716
Abstract
In this work, kinks with non-canonical kinetic energy terms are studied in a type of two-dimensional dilaton gravity model. The linear stability issue is generally discussed for arbitrary static solutions, and the stability criteria are obtained. As an explicit example, a model with cuscuton term is studied. After rewriting the equations of motion into simpler first-order formalism and choosing a polynomial superpotential, an exact self-gravitating kink solution is obtained. The impacts of the cuscuton term are discussed.
8 pages, 1 figure, accepted for publication by Phys. Letts. B
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