Research Interest in physics (Transferring would be good idea?)
I'll start off by saying that transferring is not unheard of, but also definitely not common.

As a first year, you can't have gotten that far into your studies given that it is still September. In general, in physics at least, it's uncommon for someone to go to grad school with a very specific topic in mind and then follow through on it through dissertation. You'll move around as you naturally move through problems of funding, finding an advisor, and just as your interests evolve. The professor and topic you start working with doesn't necessarily have to be your advisor and your dissertation topic.

I would recommend talking more to the professors who do what you might be interested in, and expanding your search. It's not uncommon to only have one or two professors working in a specific field at a department, but if they are unappealing you might find another professor you like works on something similar. For that matter, when talking to other professors, you might find that you really are interested in what they do and want to work on it.

If that doesn't work out, you CAN apply to transfer. However, as other questions have noted previously, it is an uphill battle. You'll need a convincing reason (WITHOUT sounding bitter or negative) and a very strong application package. Just applying doesn't commit you, but I would consider that a last resort only after you have tried everything else.