Gravitating kinks with asymptotically flat metrics

IF 1.8 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

EPL Pub Date : 2024-06-20 DOI:10.1209/0295-5075/ad49d0

Ziqi Wang, Yuan Zhong and Hui Wang

引用次数: 0

Abstract

In this work, we consider a two-dimensional (2D) dilaton gravity model where the dilaton kinetic term is modified by an additional derivative coupling term . In the case with a canonical scalar matter field, the field equations of this model have a simple first-order formalism, from which exact static kink solutions can be constructed. The novelty of these solutions is that the corresponding metric can be asymptotically flat rather than asymptotically anti-de Sitter. The linear stability and the localization of scalar matter fields are also studied. It was found that the solutions are stable against small linear perturbations, and the localization of scalar matter fields can be realized by introducing scalar-kink interactions.

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具有渐近平坦度量的引力扭结

在这项工作中，我们考虑了一个二维（2D）稀释引力模型，其中稀释动能项被一个额外的导数耦合项所修正。在有典型标量物质场的情况下，该模型的场方程有一个简单的一阶形式化，从中可以构造出精确的静态扭结解。这些解的新颖之处在于，相应的度量可以是渐近平坦的，而不是渐近反德西特的。此外，还研究了标量物质场的线性稳定性和定位问题。研究发现，这些解在面对小线性扰动时是稳定的，而且标量物质场的局域化可以通过引入标量-扭结相互作用来实现。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

EPL 物理-物理：综合

CiteScore

3.30

自引率

5.60%

发文量

332

审稿时长

1.9 months

期刊介绍： General physics – physics of elementary particles and fields – nuclear physics – atomic, molecular and optical physics – classical areas of phenomenology – physics of gases, plasmas and electrical discharges – condensed matter – cross-disciplinary physics and related areas of science and technology. Letters submitted to EPL should contain new results, ideas, concepts, experimental methods, theoretical treatments, including those with application potential and be of broad interest and importance to one or several sections of the physics community. The presentation should satisfy the specialist, yet remain understandable to the researchers in other fields through a suitable, clearly written introduction and conclusion (if appropriate). EPL also publishes Comments on Letters previously published in the Journal.