TL;DR
This paper discusses the behavior of the dilaton in three dimensions, suggesting that its non-rolling nature could support a duality-based solution to the cosmological constant problem in string theory.
Contribution
It proposes that the non-rolling property of the three-dimensional dilaton supports Witten's conjecture linking three- and four-dimensional theories for solving the cosmological constant problem.
Findings
The dilaton in three dimensions does not roll.
Witten's conjecture may solve the dilaton problem in string theory.
Duality between 3D and 4D theories is relevant.
Abstract
The dilaton in three dimensions does not roll. Witten's conjecture that duality between theories in three and four dimensions solves the cosmological constant problem thus may also solve the dilaton problem in string theory.
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