Lorentz violating inflation and the Swampland

Abstract

The swampland conjectures from String theory have had very interesting implications for cosmology and particularly for Inflation. It has been shown that the single field inflationary models in a GR based cosmology are in unavoidable tensions with these conjectures, while these single field models can still be consistent in certain non-trivial inflationary regimes. So it becomes interesting to see whether there is a way to overcome the issues of the swampland and single field inflation in an essentially GR based cosmology. We show that this can indeed be the case and for this, we consider a certain type of Lorentz violating inflationary scenario. We work out the swampland bounds for Lorentz violating inflationary models after which show that inflationary models which would have had otherwise serious tensions with these conjectures in a usual GR based scenario, can be very tranquil with the criterion in this regime. For this we take examples of Higgs inflation, radion gauge inflation and Spontaenous symmetry breaking inflation and show that the bounds imposed by the swampland on the Lorentz violating parameter can be easily satisfied in these models.

v4, matches the published version in EPJP

References in corpus (15)

• The Standard Model Higgs boson as the inflaton
• Electrodynamics with Lorentz-violating operators of arbitrary dimension
• Swampland Implications of GW170817-compatible Einstein-Gauss-Bonnet Gravity
• Multiple field inflation
• Lorentz Violating Inflation
• Constraining Lorentz violation with cosmology
• Trans-Planckian censorship, inflation and excited initial states for perturbations
• Cobordism Classes and the Swampland
• Trans-Planckian Censorship Conjecture and Non-thermal post-inflationary history
• Trans-Planckian Censorship and Inflation in Grand Unified Theories
• On the Trans-Planckian Censorship Conjecture and the Generalized Non-Minimal Coupling
• Generalizing the Constant-roll Condition in Scalar Inflation
• Rescaled Einstein-Hilbert Gravity: Inflation and the Swampland Criteria
• Rejuvenating the hope of a swampland consistent inflated multiverse with tachyonic inflation in the high energy RS-II Braneworld
• Inflation in minimal left-right symmetric model with spontaneous D-parity breaking

Cited by in corpus (4)

• de Sitter Swampland Conjecture in String Field Inflation
• Black-bounce solutions in a k-essence theory under the effects of bumblebee gravity
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Hořava-Lifshitz $F(\bar{R})$ theories and the Swampland