Duality-symmetric string theory and the cosmological-constant problem

Details Duality-symmetric string theory and the cosmological-constant problem Duality-symmetric string theory and the cosmological-constant problem

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..66..545t&link_type=abstract

Physical Review Letters, Volume 66, Issue 5, February 4, 1991, pp.545-548

Mathematics

Logic

12

Fundamental Problems And General Formalism

Scientific paper

We propose an ansatz for a low-energy effective action S¯ for a gravity-plus-matter system which is given by the usual action S (integral over space-time) divided by the space-time volume, S¯=S/V. The resulting gravitational equation is independent of the value of the cosmological constant that is present in S. We suggest that S¯ can be considered as an approximation for the effective action in the ``duality-symmetric'' closed-string theory in which the string coordinates x and their ``duals'' x~ are treated as independent.

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