String theory and quintessence View Full Text


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Article Info

DATE

2001-05-31

AUTHORS

Simeon Hellerman, Nemanja Kaloper, Leonard Susskind

ABSTRACT

We discuss the obstacles for defining a set of observable quantities analogous to an S-matrix which are needed to formulate string theory in an accelerating universe. We show that the quintessence models with the equations of state −1 < w < −1/3 have future horizons and may be no better suited to an S-matrix or S-vector description. We also show that in a class of theories with a stable supersymmetric vacuum, a system cannot relax into a zero-energy supersymmetric vacuum while accelerating if the evolution is dominated by a single scalar field with a stable potential. Thus describing an eternally accelerating universe may be a challenge for string theory as presently defined. More... »

PAGES

003

Identifiers

URI

http://scigraph.springernature.com/pub.10.1088/1126-6708/2001/06/003

DOI

http://dx.doi.org/10.1088/1126-6708/2001/06/003

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1019209531


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