Two questions about SUSY [Greene's book]

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SUMMARY

In "The Fabric of the Cosmos," Brian Greene discusses supersymmetry, particularly on pages 264-265, where he explains that at high temperatures, the Higgs ocean evaporates, leading to the indistinguishability of weak and electromagnetic forces. The discussion raises the question of whether gravity will also lose its distinction from other forces under similar conditions. Additionally, on page 355, Greene mentions Ramond's research revealing a symmetry in vibrational patterns of different spins in modified string theory, specifically the existence of the gravitino, a spin-3/2 particle associated with the graviton's spin-2 pattern.

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Greene in "The Fabric of the Cosmos" discusses supersymmetry. On pages 264-5, he states:"...before the Higgs ocean formed, not only did all force particles have identical masses - zero - but the photons and W and Z particles were identical in essentially every other way also as well...At high enough temperatures, that is, the Higgs ocean evaporates; as it does, the disctinction between the weak and electromagnetic forces evaporates, too." My first question is: If the temperature is high enough, will the distinction between gravity and the other forces also evaporate?

On page 355, he states:"...Ramond's research...revealed a perfect balance - a novel symmetry - between the vibrational patterns with different spins in the modified string theory. These researchers found that the new vibrational patterns arose in pairs whose spin values differed by half a unit. For every vibrational pattern with spin-1/2, there was an associated vibrational pattern with spin-0. For every vibrational pattern of spin-1, there was an associated vibrational pattern of spin-1/2, and so on." My second question is: The graviton is presumed to have a vibrational pattern with spin-2. Has the associated vibrational pattern with spin-3/2 been derived from string theory?
 
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If the temperature is high enough, will the distinction between gravity and the other forces also evaporate?

Yes, I think if you believe in unification then this is the correct picture.

The graviton is presumed to have a vibrational pattern with spin-2. Has the associated vibrational pattern with spin-3/2 been derived from string theory?

Yes---string theory contains the spin-3/2 particle, called the gravitino.
 

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