re: Physicists ... what do you think about fifth dimension travel?

To sum it up, its crossing from the conscience world into the subconscious world.

Your conscious suppresses your subconscious, and for good reason. Your subconscious sees and interacts with some bizarre shite that hangs out in there. The conscious part of your being will not allow you to see those things.

Hypnosis is one way of crossing over - so long as you come back.