On the possibility of avoiding singularities by dilaton emission

Details On the possibility of avoiding singularities by dilaton emission On the possibility of avoiding singularities by dilaton emission

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phlb..191..393a&link_type=abstract

Physics Letters B, Volume 191, Issue 4, p. 393-398.

Physics

8

Scientific paper

We analyze the classical equations of supergravity theories containing a dilaton field, investigating the possibility that dilaton emission may prevent the formation of singularities. An initial cosmological singularity can be avoided in a no-scale supergravity theory if there is a nonzero charge density associated with the R symmetry current. However, this is only possible if some fields have negative metric initially, which may indicate a breakdown of the classical equations. A similar situation seems to occur with the Schwarzschild singularity.
The work of D.V.N. was supported in part by DOE grant DE-AC02-76ER0081 and in part by the University of Wisconsin Research Committee with funds granted by the Wisconsin Alumni Research Foundation.

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