论文标题
在动态张力弦理论中，从平坦或几乎平坦的空间中创造了Brane World的创造
Brane world creation from flat or almost flat space in dynamical tension string theories
论文作者
论文摘要
对Brane Worlds的构建充满了兴趣，在较低的表面（Brane）中，物质和重力被迫有效。由于弦理论的结果如何出现是一个至关重要的问题，并且已经广泛讨论了这一点。在这里，我们将研究一个不同的场景，该场景出现在动态张力理论中，弦乐张力在两个表面之间是正面的，在两个表面之间是正面的，在两个表面上，在两个表面本身中，弦张力张力变得无限，因此有效地限制了字符串，因此对这些表面之间的所有物质和引力均与弦乐表面之间的所有物质和重力产生了一种新型的类型的弦型英国风格的世界情景。获得此方案的基本公式包括假设两种类型的字符串，其特征是与自发弦张力生成相关的不同集成常数。这些弦张力乘以嵌入度量的指标定义了满足einsteins方程的共同相关指标。当这两个指标都是通过特殊的保形转换相关的平坦空间时，Braneworld会出现很自然。确定了两种类型的弦张力，它们在两个紧密的膨胀表面上爆炸。然后出现了一个令人困惑的方面：该结构基于平坦的空间，但随后还有弦线附近的张力很大，而Braneworld的边界附近，无限张力字符串中的后背反应也可以破坏平坦的空间背景？可以使用几乎平坦（或空的）空间创造的机制宇宙创建的Fortunatelly，该空间结合了膜中非常大的弦张力的气体，此前在2+1个嵌入空间中的1+1个膜中研究，现在已在1+（D-2）膜中推广到1+（D-1）空间中。
There is great interest in the construction of brane worlds, where matter and gravity are forced to be effective only in a lower dimensional surface , the brane . How these could appear as a consequence of string theory is a crucial question and this has been widely discussed. Here we will examine a distinct scenario that appears in dynamical tension theories and where string tension is positive between two surfaces separated by a short distance and at the two surfaces themselves the string tensions become infinite, therefore producing an effective confinement of the strings and therefore of all matter and gravity to the space between these to surfaces, which is in fact a new type of stringy brane world scenario. The basic formulation for obtaining this scenario consist of assuming two types of strings characterized by a different constant of integration related to the spontaneous string tension generation. These string tension multiplied by the embedding metric define conformally related metrics that both satisfy Einsteins equation. The braneworlds appear very naturally when these two metrics are both flat spaces related by a special conformal transformation. The two types of string tensions are determined and they blow up at two close expanding surfaces. A puzzling aspect appears then: the construction is based on flat spaces, but then there are also strings with very large tension near the boundaries of the braneworld,so can the back reaction from the infinite tension strings destroy the flat space background?. Fortunatelly that can be resolved using the mechanism Universe creation from almost flat (or empty) spaces, which incorporates a gas of very large string tensions in a membrane, studied before in 1+1 membranes in a 2+1 embedding space and now is generalized for a 1+(D-2) membrane moving in a 1+(D-1) space.
