Monodromy inflation and an emergent mechanism for stabilising the cosmological constant

被引:9
|
作者
Padilla, Antonio [1 ]
机构
[1] Univ Nottingham, Sch Phys & Astron, Univ Pk, Nottingham NG7 2RD, England
关键词
Classical Theories of Gravity; Effective Field Theories;
D O I
10.1007/JHEP01(2019)175
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
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.
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页数:12
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