The limits of lattice inflation: a cautionary tale

arXiv:2606.14853 · astro-ph.CO, gr-qc, hep-ph, hep-th · Submitted 2026-06-12 · Read on arXiv

astro-ph.CO, gr-qc, hep-ph, hep-th

Submitted: 2026-06-12

Updated: 2026-08-27

Code: https://github.com/bengladwyn/SupplementalMaterials2606

Terminology

• Reheating — 19× in this paper · explained in 2 episodes
• Accuracy — 5× in this paper · explained in 1 episode
• Adam — 3× in this paper · explained in 2 episodes
• Symmetry Breaking — 2× in this paper · explained in 3 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Bispectrum — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Homogeneity — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Topological Defects — 1× in this paper · explained in 2 episodes
• Universality Class — 1× in this paper · explained in 2 episodes
• pulsar timing arrays — 1× in this paper · explained in 2 episodes

Sources

• Planck 2018 results. X. Constraints on inflation
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• Probing Primordial Gravitational Waves: Ali CMB Polarization Telescope
• The Simons Observatory: Science goals and forecasts
• Probing Cosmic Inflation with the LiteBIRD Cosmic Microwave Background Polarization Survey
• Warm Inflation
• Warm Inflation with the Standard Model
• Classical decay of inflaton
• Lattice study of classical inflaton decay
• Resonant decay of Bose condensates
• LATTICEEASY: A Program for Lattice Simulations of Scalar Fields in an Expanding Universe
• DEFROST: A New Code for Simulating Preheating after Inflation
• The Art of Lattice and Gravity Waves from Preheating
• Preheating with Non-Minimal Kinetic Terms
• The art of simulating the early Universe -- Part I
• CosmoLattice
• Dynamics of Symmetry Breaking and Tachyonic Preheating
• Tachyonic Instability and Dynamics of Spontaneous Symmetry Breaking
• Symmetry Breaking and False Vacuum Decay after Hybrid Inflation
• Gravitational Wave Production At The End Of Inflation

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