标题： 标量场理论中的类似双子模型 显示英文标题

标题： Twinlike Models in Scalar Field Theories

摘要： 这项工作涉及在由实标量场描述的多种情景中的缺陷结构的存在。 我们考虑的缺陷结构是运动方程的静态解，这些解依赖于单个空间维度。 我们寻找不同的模型，这些模型支持相同的缺陷解，并具有相同的能量密度。 我们在平直时空中进行研究，其中我们引入并研究了一类新的模型。 我们还在弯曲时空中进行研究，在膜宇宙背景中，有一个无限延伸的额外维度，在那里我们展示了如何从静态场配置中形成膜。 显示英文摘要

摘要： This work deals with the presence of defect structures in models described by real scalar field in a diversity of scenarios. The defect structures which we consider are static solutions of the equations of motion which depend on a single spatial dimension. We search for different models, which support the same defect solution, with the very same energy density. We work in flat spacetime, where we introduce and investigate a new class of models. We also work in curved spacetime, within the braneworld context, with a single extra dimension of infinite extent, and there we show how the brane is formed from the static field configuration.