The classical wormhole solution and wormhole wavefunction with a   nonlinear Born-Infeld scalar field
  On this paper we consider the classical wormhole solution of the Born-Infeld scalar field. The corresponding classical wormhole solution can be obtained analytically for both very small and large $\dot{\phi}$. At the extreme limits of small $\dot{\phi}$ the wormhole solution has the same format as one obtained by Giddings and Strominger[10]. At the extreme limits of large $\dot{\phi}$ the wormhole solution is a new one. The wormhole wavefunctions can also be obtained for both very small and large $\dot{\phi}$. These wormhole wavefunctions are regarded as solutions of quantum-mechanical Wheeler--Dewitt equation with certain boundary conditions. 
H. Q. Lu, L. M. Shen, P. Ji, G. F. Ji and N. J. Sun