标题： 与非线性实现相关的BPS壁上的修正模式展开 显示英文标题

标题： Modified mode-expansion on a BPS wall related to the nonlinear realization

摘要： 我们提出了一种在BPS域壁背景中对体场的修改后的模式展开，以获得壁上的有效理论。 每个由我们的模式展开定义的模式上非线性地实现了破坏的超对称性。 我们的工作澄清了两种不同方法之间在BPS壁上推导有效理论的关系，{\it 即}非线性实现方法和模式展开方法。 我们还讨论了一种进一步的修改，该修改尊重由壁破坏的洛伦兹和$U(1)_R$对称性。 显示英文摘要

摘要： We propose a modified mode-expansion of the bulk fields in a BPS domain wall background to obtain the effective theory on the wall. The broken SUSY is nonlinearly realized on each mode defined by our mode-expansion. Our work clarifies a relation between two different approaches to derive the effective theory on a BPS wall, {\it i.e.} the nonlinear realization approach and the mode-expansion approach. We also discuss a further modification that respects the Lorentz and $U(1)_R$ symmetries broken by the wall.