"Quantum gravity"의 두 판 사이의 차이

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** in the end, do we modify gravity and relativity, or do we modify quantum mechanics, or perhaps both?
 
** in the end, do we modify gravity and relativity, or do we modify quantum mechanics, or perhaps both?
  
 
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2020년 12월 28일 (월) 04:12 판

Puzzles of (quantum) gravity

  • The effective, semiclassical theory of gravity has raised lots of fascinating questions, some old and some new:
    • is gravity really just the dynamics of spacetime geometry?
    • why do we live in a huge universe?
    • what becomes of spacetime at shortest distances?
    • is there a statistical explanation of black-hole entropy?
    • is spacetime physics holographic?
    • what is the nature of dark matter and dark energy { is it exotic matter, exotic gravity, or perhaps a mixture of both?
    • in the end, do we modify gravity and relativity, or do we modify quantum mechanics, or perhaps both?


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