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Question about Paradoxes

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    #32
    Son Goku
    Closed Accounts Posts: 1,475 ✭✭✭Son Goku


    That's basically where we are today. QFT stands as an excellent theory of matter and three of the fundamental forces and GR an excellent theory of gravity and we don't know where to go from there.

    Of course there are a lot of interesting questions still left in QFT and GR themselves which may have to be solved first before we can attempt to move forward.

    Anyway, I hoped that partially explained things.


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    #33
    SkepticOne
    Closed Accounts Posts: 6,718 ✭✭✭SkepticOne


    Son Goku wrote:
    That's basically where we are today. QFT stands as an excellent theory of matter and three of the fundamental forces and GR an excellent theory of gravity and we don't know where to go from there.
    I thought you said that bhoth of these are combined in string theory?


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    #34
    Son Goku
    Closed Accounts Posts: 1,475 ✭✭✭Son Goku


    SkepticOne wrote:
    I thought you said that bhoth of these are combined in string theory?
    String Theory doesn't combine them, it modifies/improves QFT so that gravity can be quantised as a QFT.
    However it still isn't clear that this is the correct approach. There is significant evidence that gravity can't be made into a QFT no matter what you do.

    Also String Theory isn't finished as a research project, so we don't know if it has "worked" or not. It isn't even certain that it is internally consistent.


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