Brane Worlds, the Cosmological Constant and String Theory

Alwis, S.P. de; Flournoy, Alex; Irges, Nikolaos

doi:10.1088/1126-6708/2001/01/027

Cited by 22 publications

(28 citation statements)

References 29 publications

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“…(The inclusion of a delta-function source is still necessary.) The use of the breathing mode was then explored in the context of the Randall-Sundrum I scenario (with two 3-branes [39]) in [53,54,55].…”

Section: Two-scalar Domain-wall Solutionsmentioning

confidence: 99%

Domain walls with localized gravity and domain-wall/quantum field theory correspondence

2001

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We review general domain-wall solutions supported by a delta-function source, together with a single pure exponential scalar potential in supergravity. These scalar potentials arise from a sphere reduction in M-theory or string theory. There are several examples of flat (BPS) domain walls that lead to a localisation of gravity on the brane, and for these we obtain the form of the corrections to Newtonian gravity. These solutions are lifted back on certain internal spheres to D = 11 and D = 10 as M-branes and D-branes. We find that the domain walls that can trap gravity yield M-branes or Dp-branes that have a natural decoupling limit, i.e. p ≤ 5, with the delta-function source providing an ultra-violet cut-off in a dual quantum field theory. This suggests that the localisation of gravity can generally be realised within a Domain-wall/QFT correspondence, with the delta-function domain-wall source providing a cut-off from the space-time boundary for these domain-wall solutions. We also discuss the form of the one-loop corrections to the graviton propagator from the boundary QFT that would reproduce the corrections to the Newtonian gravity on the domain wall.

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Section: Two-scalar Domain-wall Solutionsmentioning

confidence: 99%

Domain walls with localized gravity and domain-wall/quantum field theory correspondence

2001

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“…This connection was made in Refs. [13,14,15,16,17], which makes use of a massive five-dimensional supergravity scenario originating from an S 5 compactification of type IIB theory with a breathing mode [18]. This result ensures that the Randall-Sundrum scenario may be realized in a fully supersymmetric context.…”

Section: Introductionmentioning

confidence: 99%

Randall–Sundrum brane tensions

Cvetič¹,

Duff²,

Liu³

et al. 2001

Nuclear Physics B

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We show that the singular sources in the energy-momentum tensor for the RandallSundrum brane world, viewed as a solution of type IIB supergravity, are composed of two elements. One of these is a D3-brane source with tension opposite in sign to the RS tension in five dimensions; the other arises from patching two regions of flat ten-dimensional spacetime. This resolves an apparent discrepancy between supersymmetry and the sign and magnitude of the RS tension.

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“…12-15͒ with suggestions that they offer new approaches to the cosmological constant problem. [16][17][18][19][20][21][22][23][24][25] Many open questions remain, however, in the RSII scenario and its variants. One set of questions centers on the four-dimensional representation of the five-dimensional dynamics.…”

Section: Introductionmentioning

confidence: 99%

Effective theories and black hole production in warped compactifications

Giddings

Katz

2001

Journal of Mathematical Physics

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We investigate aspects of the four-dimensional effective description of brane world scenarios based on warped compactification on anti-de Sitter space. The low-energy dynamics is described by visible matter gravitationally coupled to a ``dark'' conformal field theory. We give the linearized description of the 4d stress tensor corresponding to an arbitrary 5d matter distribution. In particular a 5d falling particle corresponds to a 4d expanding shell, giving a 4d interpretation of a trajectory that misses a black hole only by moving in the fifth dimension. Breakdown of the effective description occurs when either five-dimensional physics or strong gravity becomes important. In scenarios with a TeV brane, the latter can happen through production of black holes near the TeV scale. This could provide an interesting experimental window on quantum black hole dynamics.Comment: harvmac, 31 pages. v2: minor reference, equation, and acknowledgment change

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Brane Worlds, the Cosmological Constant and String Theory

Cited by 22 publications

References 29 publications

Domain walls with localized gravity and domain-wall/quantum field theory correspondence

Domain walls with localized gravity and domain-wall/quantum field theory correspondence

Randall–Sundrum brane tensions

Effective theories and black hole production in warped compactifications

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