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Bouncing Negative-Tension Branes · Around

2007

Bouncing Negative-Tension Branes

Lehners, Jean-Luc, Turok, Neil

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Braneworlds, understood here as double domain wall spacetimes, can be described in terms of a linear harmonic function, with kinks at the locations of the boundary branes.

In a dynamical setting, there is therefore the risk that the boundary brane of negative tension, at whose location the value of the harmonic function is always lowest, can encounter a zero of this harmonic function, corresponding to the formation of a singularity.
We show that for certain types of brane-bound matter this singularity can be avoided, and the negative-tension brane can shield the bulk spacetime from the singularity by bouncing back smoothly before reaching the singularity.
In our analysis we compare the 5- and 4-dimensional descriptions of this phenomenon in order to determine the validity of the moduli space approximation.

Built on

V. A. Fock, The Theory of Space, Time and Gravitation, pp. 173–175, MacMillan, New York (1964)
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K. S. Stelle (1998), hep-th/9803116
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E. Bergshoeff, R. Kallosh, and A. Van Proeyen, JHEP 10
2000
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J. Khoury, B. A. Ovrut, P. J. Steinhardt, and N. Turok, Phys. Rev. D64
2001
Earlier work this paper cites.

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Then

W. Chen, Z. W. Chong, G. W. Gibbons, H. Lu, and C. N. Pope, Nucl. Phys. B732
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Later among the works it cites.
G. A. Palma, JHEP 09
Original
2007
Closest in time.
J.-L. Lehners, P. Smyth, and K. S. Stelle, Nucl. Phys. B790
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