Stringy landscape v.s higgs fine tuning

[ensabah6]

Susy has been offered as a way to stabilize the Higgs sector from radiative corrections, on the argument that w/o SUSY the higgs expansion would have to be fine-tuned to 32 decimal places.

But string theory landscape posits 10^500 different compactification schemes w/anthropic principle offered to select one. Is this an improvement? why not suggest a multiverse of higgs potentials with ours being one of many (and hence fined tuned)/

 

[Parlyne]

The string landscape is only an improvement if you can show both that significantly less fine-tuned vacua are totally inhospitable to intelligent life of any kind and that all (or at least a very large sampling) of the sting vacua actually exist.

In a sense, the string landscape is exactly what you're suggesting for the Higgs potential, only extended to a larger parameter set. The only difference is that the string landscape is justified by what might be a more fundamental theory than what we already know about the universe, while an ad hoc multiverse is not.

 

[sir-pinski]

The debate between a "stringy landscape" and "Higgs fine tuning" is a complex and ongoing one in the field of theoretical physics. On one hand, the idea of SUSY (Supersymmetry) as a solution to the problem of fine tuning in the Higgs sector is an intriguing one. It offers a potential way to stabilize the Higgs sector from radiative corrections, which would otherwise require an extremely precise level of fine tuning in order for the Standard Model to accurately describe our universe.

However, the concept of a string theory landscape with an enormous number of possible compactifications, each with its own set of physical laws and parameters, brings into question the usefulness of SUSY as a solution. The anthropic principle is used to argue that our universe is just one of many possible outcomes, and therefore the fine tuning of the Higgs sector in our universe is not as improbable as it may seem.

But is this really an improvement? While the idea of a multiverse of Higgs potentials may seem appealing, it ultimately raises more questions than it answers. How do we determine which potential is the "correct" one? How do we explain the apparent fine tuning in our universe compared to others? And most importantly, does this concept actually offer any testable predictions or explanations for the observed phenomena in our universe?

In contrast, SUSY offers a more concrete and testable solution to the problem of Higgs fine tuning. While it may not be a perfect solution, it at least offers the potential for experimental verification and further understanding of the fundamental laws of our universe.

In summary, while the string theory landscape and the anthropic principle may seem like an improvement over the idea of fine tuning in the Higgs sector, it ultimately raises more questions than it answers and lacks the testable predictions and explanations that SUSY offers. Therefore, it is important to continue exploring both ideas and their potential implications in order to gain a better understanding of the fundamental laws of our universe.