Why does git worktree add create a branch, and can I delete it?

Question

I used git worktree add to create a new worktree. I noticed that is has created a new branch in the repo with the same name as the worktree. What is this branch for

Answer 1

git worktree --help clearly mentions this as below.

COMMANDS
       add  []
           Create  and checkout  into it. The new working directory is linked to the current repository, sharing everything
           except working directory specific files such as HEAD, index, etc.

           If  is omitted and neither -b nor -B is used, then, as a convenience, a new branch based at HEAD is created automatically,
           as if -b $(basename ) was specified.

       prune
           Prune working tree information in $GIT_DIR/worktrees.