Detuned Branes and Supersymmetry Breaking

Abstract

We consider the spontaneous breaking of supersymmetry in five dimensional supergravity with boundaries where the supersymmetry breaking mechanism is provided by the even part of the bulk prepotential. The supersymmetric action comprises boundary brane terms with detuned tensions. The two branes have opposite tensions. We analyse the possible vacua with spontaneously broken supersymmetry. A class of solutions corresponds to rotated branes in an $Ad{S}_5$ bulk. In particular parallel branes which are rotated with respect to the bulk preserve 1/4 of supersymmetry. We analyse more general vacua using the low energy effective action for gravity coupled to the radion field. Supersymmetry breaking implies that the radion field acquires a potential which is negative and unbounded from below. This potential is modified when coupling the boundary branes to a bulk four--form field. For a brane charge larger than the deficit of brane tension, the radion potential is bounded from below while remaining flat when the charge equals the deficit of brane tension.

25 pages, new section on static solutions, minor changes, final version

References in corpus (10)

• Radion and Holographic Brane Gravity
• Low energy effective theory for two branes system
• Five dimensional supergravity in N = 1 superspace
• Twisting Warped Supergravity
• Born-Again Braneworld
• On Scherk-Schwarz mechanism in gauged five-dimensional supergravity and on its relation to bigravity
• Twisted supergravity and untwisted super-bigravity
• Effective theory for close limit of two branes
• Racetrack models in theories from extra dimensions
• Cosmological constant and kinetic supersymmetry breakdown on a moving brane

Cited by in corpus (10)

• Brane World Cosmology
• Radion effective theory in the detuned Randall-Sundrum model
• Low Energy Branes, Effective Theory and Cosmology
• Discriminating 4D supersymmetry from its 5D warped version
• Neutrino Dark Energy and Moduli Stabilization in a BPS Braneworld Scenario
• On Newton's law in supersymmetric braneworld models
• Potentials and superpotentials in the effective N=1 supergravities from higher dimensions
• On orbifold theory and N=2, D=5 gauged supergravity
• Soft Supersymmetry Breaking on the Brane
• Braneworld Flux Inflation