June 21, 2024• Physics 17, s78 Theorists explain why cosmic inflation might appear to be driven by a single inflaton field, even if it had actually been driven by two or more such fields. K. Tokeshi and V. Vennin [1] K. Tokeshi and V. Vennin [1] × Cosmic inflation—a theorized exponential expansion of space in the early Universe—offers solutions to important cosmological puzzles.