## Updated Math Model for Warp Drives and Classes of Future Warp Drives

There is an update of a mathematical and physical model for a warp drive. The Alcubierre warp drive is an exotic solution in general relativity. It allows for superluminal travel at the cost of enormous amounts of matter with negative mass density. For this reason, the Alcubierre warp drive has been widely considered unphysical. In …