Do these sciences need to exist or can we make our own?
I like the study of sideway glances (which in a parallel dimension would be cast the opposite way every time), scientifically categorized as sidelonginus glancisis. They can be lascivious, envious, hateful, suspicious, humorous, knowing, etc. It all depends on several parameters, like social situation, squinting percentage, blinking rate, correlation with other expressive phenomena like leering, winking, ogling, lip-smacking, and whistling, among others.
@Morgan2, as you can see, you need to specify some parameters of your question before we can really begin to help you!
@The Judge has said it all and better. We can help you modify what you have for the better, but we can't create it for you. Once you have something fleshed out, story-specific; relevant questions will naturally come to you, and your enquiries will therefore be better directed.
As it stands, my glance study is a valid response to your vagueness, despite not being helpful in the slightest, I imagine. You need to get specific if you want to really take advantage of this wonderful forum!
And if you're worried about someone pinching ideas, as TJ mentioned, fret not. Every writer here has a million ideas and half-projects, and given our egos, we all probably think they are better than everyone else's. Also, I believe about half of us here have already had a creative dalliance with a parallel dimension or two as well, so you'll be in good hands if you can bring a well-defined question to the table.
Keep fleshing that idea out. On a sidenote, I would suggest focusing more on plot and characters rather than worldbuilding as a starting point for your story. Have the worldbuilding complement the plot. If you do it the other way around, the story will probably be weak and superficial. My 2 cents.