A cosmology sourced by instant folded strings produces slow-roll dark energy from the dilaton potential's slope, with NEC violation suppressed in expansion and amplified in contraction.
Invariance under complex transformations, and its relevance to the cosmological constant problem
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abstract
In this paper we study a new symmetry argument that results in a vacuum state with strictly vanishing vacuum energy. This argument exploits the well-known feature that de Sitter and Anti- de Sitter space are related by analytic continuation. When we drop boundary and hermiticity conditions on quantum fields, we get as many negative as positive energy states, which are related by transformations to complex space. The paper does not directly solve the cosmological constant problem, but explores a new direction that appears worthwhile.
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Instant Cosmology
A cosmology sourced by instant folded strings produces slow-roll dark energy from the dilaton potential's slope, with NEC violation suppressed in expansion and amplified in contraction.