Warming up the Fibres
arXiv:2505.04447 · doi:10.1007/jhep09(2025)020
Abstract
Fibre inflationary models are constructed in type-IIB string flux compactification. These models have been shown to be in agreement with the cosmological observations under appropriate choices of parameters, which originate from their string theory construction. In the present work, we embed such models, originally studied in the cold inflation picture, in the context of warm inflation. We study the viability of different fibre inflation potentials in both strong and weak dissipative regime of warm inflation. In fibre inflation, the inflaton is a four-dimensional complex manifold -- a fibre of a fibred Calabi-Yau. The potential in this case is generated by an interplay of various perturbative and non-perturbative corrections. The former type of corrections consists of leading-order term, higher derivative correction, and various string loop corrections of KK, log-loop and winding type. Depending on the balance between several corrections, we present four different fibre inflationary potentials and show that the warm inflationary pictures for all of them can successfully fall in the viable window from both Planck and recent Atacama Cosmology Telescope (ACT) data. We show that warm inflation makes it possible to extend the range of parameters of applicability of these models. Our results also indicate that with the help of a large dissipation ratio, one can achieve a sub-Planckian field excursion, although, this runs on the possibility of moving away from the perturbative control of low-energy four-dimensional supergravity theory.
30 pages, 4 figure, 3 tables; This matches the published version in JHEP
References in corpus (69)
- de Sitter Vacua in String Theory
- Hierarchies from Fluxes in String Compactifications
- Systematics of Moduli Stabilisation in Calabi-Yau Flux Compactifications
- CFT's From Calabi-Yau Four-folds
- The Swampland: Introduction and Review
- Flux Compactification
- Flux compactifications in string theory: a comprehensive review
- How long before the end of inflation were observable perturbations produced?
- On the Cosmological Implications of the String Swampland
- Supersymmetry Breaking and alpha'-Corrections to Flux Induced Potentials
- Bounds on Slow Roll and the de Sitter Swampland
- New Supersymmetric String Compactifications
- Warm Inflation and its Microphysical Basis
- Kahler Moduli Inflation
- Warm Inflation in the Adiabatic Regime- a Model, an Existence Proof for Inflationary Dynamics in Quantum Field Theory
- String Loop Corrections to Kahler Potentials in Orientifolds
- Fibre Inflation: Observable Gravity Waves from IIB String Compactifications
- Loop Corrections to Volume Moduli and Inflation in String Theory
- General Analysis of LARGE Volume Scenarios with String Loop Moduli Stabilisation
- Warm Little Inflaton
- Jumping Through Loops: On Soft Terms from Large Volume Compactifications
- The importance of being warm (during inflation)
- Progress in D-brane model building
- Dissipation coefficients from scalar and fermion quantum field interactions
- Systematics of String Loop Corrections in Type IIB Calabi-Yau Flux Compactifications
- General dissipation coefficient in low-temperature warm inflation
- Kaehler Corrections for the Volume Modulus of Flux Compactifications
- Power spectrum for inflation models with quantum and thermal noises
- Warm inflation as a way out of the swampland
- De Sitter from T-branes
- Warm inflation dissipative effects: predictions and constraints from the Planck data
- Warm Inflation in the light of Swampland Criteria
- Minimal Warm Inflation
- On the consistency of warm inflation
- Robust Inflation from Fibrous Strings
- Recent developments in warm inflation
- Towards a reliable effective field theory of inflation
- Theory of non-Gaussianity in warm inflation
- Perturbative moduli stabilisation in type IIB/F-theory framework
- A Systematic Approach to Kähler Moduli Stabilisation
- Warm brane inflation with an exponential potential: A consistent realization away from the swampland
- Swampland, Axions and Minimal Warm Inflation
- Logarithmic loop corrections, moduli stabilisation and de Sitter vacua in string theory
- Global Embedding of Fibre Inflation Models
- Observational implications of mattergenesis during inflation
- Inflation: Moduli Stabilisation and Observable Tensors from Higher Derivatives
- Trans-Planckian censorship and other swampland bothers addressed in warm inflation
- On the consistency of warm inflation in the presence of viscosity
- Runaway potentials in warm inflation satisfying the swampland conjectures
- The warm inflation story
- Chiral Global Embedding of Fibre Inflation Models
- Stability analysis for the background equations for inflation with dissipation and in a viscous radiation bath
- Higher derivatives in Type II and M-theory on Calabi-Yau threefolds
- On de Sitter String Vacua from Anti-D3-Branes in the Large Volume Scenario
- Minimal warm inflation with complete medium response
- Inflating with Large Effective Fields
- Systematics of the Expansion in F-Theory
- Loops, Local Corrections and Warping in the LVS and other Type IIB Models
- Reheating and Dark Radiation after Fibre Inflation
- WarmSPy: a numerical study of cosmological perturbations in warm inflation
- Disentangling the - Duality
- Starobinsky Inflation from String Theory?
- Running and running of the running of the scalar spectral index in warm inflation
- Primordial black holes and gravitational waves from dissipation during inflation
- Dirac-Born-Infeld warm inflation realization in the strong dissipation regime
- Viability of warm inflation with standard model interactions
- On K3-fibred LARGE Volume Scenario with de Sitter vacua from anti-D3-branes
- Chiral global embedding of Fibre Inflation with uplift
- Global Embedding of Fibre Inflation in Perturbative LVS