What Are the Alternatives to the Constant Product Formula, and What Problem Do They Solve?
Alternatives include the constant sum formula ($x + y = k$) and the constant mean formula (e.g. Balancer's weighted average).
The constant sum formula is ideal for stablecoin pools as it offers zero slippage near the 1:1 peg, but fails if the peg breaks. Hybrid curves, like Curve's Stableswap, combine elements to provide high capital efficiency for stable assets while maintaining liquidity during de-pegs.