Monodromy inflation and an emergent mechanism for stabilising the cosmological constant

Abstract

We show that a pair of field theory monodromies in which the shift symmetry is broken by small, well motivated deformations, naturally incorporates a mechanism for cancelling off radiative corrections to the cosmological constant. The lighter monodromy sector plays the role of inflation as well as providing a rigid degree of freedom that acts as a dynamical counterterm for the cosmological constant. The heavier monodromy sector includes a rigid dilaton that forces a global constraint on the system and the cancellation of vacuum energy loops occurs at low energies via the sequestering mechanism. This suggests that monodromy constructions in string theory could be adapted to incorporate mechanisms to stabilise the cosmological constant in their low energy descriptions.

Version to appear in JHEP

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Cited by in corpus (7)

• Cosmological consequences of Omnia Sequestra
• Generalised scalar-tensor theories and self-tuning
• The Super-Stuckelberg procedure and dS in Pure Supergravity
• Cosmological cancellation of the vacuum energy density
• A natural theory of dark energy
• CMB constraints on monodromy inflation at strong coupling
• Ultraviolet sensitivity of the cosmological sequester