Is unification really needed?

  • Thread starter xaratustra
  • Start date
  • #1
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just came to my mind to ask: Is gravitation really a fundamental force? As far as I recall from my GR lecture, gravitation is a property of space-time. Other forces seem to be well described by the grand unified theories (GUT).

So why is there still a need to include gravitation?

cheers!
:tongue2:
 

Answers and Replies

  • #2
35,518
11,990
GUT is an open problem itself.
Apart from that, you cannot simply work with quantum field theory in a curved space. Or at least it is unclear how that could be done.
 
  • #3
mathman
Science Advisor
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In regimes where general relativity and quantum theory are both needed (inside black holes), they are incompatible.
 

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