Metastable gravitons and infinite volume extra dimensions

被引:333
作者
Dvali, G [1 ]
Gabadadze, G [1 ]
Porrati, M [1 ]
机构
[1] NYU, Dept Phys, New York, NY 10003 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/S0370-2693(00)00631-6
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We address the issue of whether extra dimensions could have an infinite volume and yet reproduce the effects of observable four-dimensional gravity on a brane. There is no normalizable zero-mode graviton in this case, nevertheless correct Newton's law can be obtained by exchanging bulk gravitons. This can be interpreted as an exchange of a single metastable 4D graviton. Such theories have remarkable phenomenological signatures since the evolution of the Universe becomes high-dimensional at very large scales. Furthermore, the bulk supersymmetry in the infinite volume limit might be preserved while being completely broken on a brane. This gives rise to a possibility of controlling the value of the bulk cosmological constant. Unfortunately, these theories have difficulties in reproducing certain predictions of Einstein's theory related to relativistic sources. This is due to the van Dam-Veltman-Zakharov discontinuity in the propagator of a massive graviton. This suggests that all theories in which contributions to effective 4D gravity come predominantly from the bulk graviton exchange should encounter serious phenomenological difficulties. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:112 / 118
页数:7
相关论文
共 25 条
  • [1] The hierarchy problem and new dimensions at a millimeter
    Arkani-Hamed, N
    Dimopoulos, S
    Dvali, G
    [J]. PHYSICS LETTERS B, 1998, 429 (3-4) : 263 - 272
  • [2] ARKANIHAMED N, 1999, PHYS REV D, V59
  • [3] ARKANIHAMED N, HEPPH9807344
  • [4] CSAKI C, HEPTH0002161
  • [5] CSAKI C, HEPTH0003020
  • [6] Dynamical compactification as a mechanism of spontaneous supersymmetry breaking
    Dvali, G
    Shifman, M
    [J]. NUCLEAR PHYSICS B, 1997, 504 (1-2) : 127 - 146
  • [7] DVALI G, HEPTH0003054
  • [8] DVALI G, HEPTH0005016
  • [9] GIDDINGS S, HEPTH0002091
  • [10] GOGBERASHVILI M, HEPPH9812365