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arXiv 0711.3550hep-thgr-qc
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K场、夸克和厚膜

K fields, compactons, and thick branes

C. Adam, N. Grandi, J. Sanchez-Guillen, A. Wereszczynski

摘要:

K场,即具有非标准动力学项的场,允许具有紧支撑的孤子解,即,巴顿。1+1维的紧致子在高维中可能会产生畴壁型和有限厚度的拓扑缺陷。在这里,我们证明,对于一个适当选择的动力学项,线性扰动的传播是完全抑制外的拓扑缺陷,限制传播的畴壁内的粒子。另一方面,内部的拓扑缺陷的线性扰动的传播是标准的类型,尽管非标准的动力学项。因此,这层雷顿畴壁的作用就像是一个有限厚度的膜,它嵌入在高维空间中,但物质场被约束在它上面。此外,我们发现强有力的迹象表明,当重力被考虑在内,重力的位置在兰德尔-Sundrum的意义上的工程,这些磁共振域壁。当从整体来看时,这些有限厚度的膜实际上不能与无限薄的膜区分开来。

英文摘要:

K fields, that is, fields with a non-standard kinetic term, allow for soliton solutions with compact support, i.e., compactons. Compactons in 1+1 dimensions may give rise to topological defects of the domain wall type and with finite thickness in higher dimensions. Here we demonstrate that, for an appropriately chosen kinetic term, propagation of linear perturbations is completely suppressed outside the topological defect, confining the propagation of particles inside the domain wall. On the other hand, inside the topological defect the propagation of linear perturbations is of the standard type, in spite of the non-standard kinetic term. Consequently, this compacton domain wall may act like a brane of finite thickness which is embedded in a higher dimensional space, but to which matter fields are constrained. In addition, we find strong indications that, when gravity is taken into account, location of gravity in the sense of Randall--Sundrum works for these compacton domain walls. When seen from the bulk, these finite thickness branes, in fact, cannot be distinguished from infinitely thin branes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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