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Singular P\"oschl-Teller II potentials and gravitating kinks

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arxiv 2207.12681 v2 pith:OKZMGW2G submitted 2022-07-26 hep-th

Singular P\"oschl-Teller II potentials and gravitating kinks

classification hep-th
keywords equationkinklinearsolutionbackgroundgravitatingmodelmodes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report a two-dimensional (2D) gravitating kink model, for which both the background field equations and the linear perturbation equation are exactly solvable. The background solution describes a sine-Gordon kink that interpolating between two asymptotic AdS$_2$ spaces, and can be regarded as a 2D thick brane world solution. The linear perturbation equation can be recasted into a Schr\"odinger-like equation with singular P\"oschl-Teller II potentials. There is no tachyonic state in the spectrum, so the solution is stable against the linear perturbations. Besides, there can be $n=0,1,2,\cdots$ bounded vibrational modes around the kink. The number of these vibrational modes varies with model parameters.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Kink collisions in a two-dimensional gravity model

    hep-th 2026-07 conditional novelty 6.0

    In a 2D dilaton-gravity model, stronger gravity shifts kink-antikink bounce windows to higher speeds and narrows them, leaves a lasting contraction of the conformal scale, and produces no curvature singularity in the ...

  2. Kink collisions in a two-dimensional gravity model

    hep-th 2026-07 conditional novelty 6.0

    In 2D MMSS dilaton gravity, self-gravitating φ⁴ kink-antikink collisions show resonance windows shifted to higher velocities and narrowed by stronger gravity, with no singularity formation in the runs performed.

  3. First Law for Nonsingular Black Holes in 2D Dilaton Gravity

    gr-qc 2026-03 reject novelty 4.0

    For 2D nonsingular dilaton black holes with A=f+c, the first law holds with energy E=-c/2 once the asymptotic time translation is properly normalized.