How do wormholes work?

Could you please elaborate on the concept of wormholes? I'm particularly interested in understanding how they function and operate within the realm of theoretical physics. Could you describe the scientific principles behind their existence and how they might potentially connect different points in spacetime? Additionally, are there any experimental evidences or theories that support the existence of wormholes in our universe? Finally, what are the potential implications of wormholes for interstellar travel and communication? Thank you for your assistance in explaining this fascinating topic.