Questions tagged [string-theory-landscape]
This tag applies to questions which deal with investigations of the string-theory landscape (defined as the space of solutions to the dynamical equations of string-theory) by physical, mathematical, or statistical methods.
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What would the universe look like if it had undergone a false vacuum decay in the past?
Inspired by "if a metastable de Sitter space lasting for cosmological durations really is impossible in string theory, then dark energy needs to be explained in some other way, e.g. via ...
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Do matrix models capture the string landscape?
Essentially what the title asks-- are matrix models, such as BFSS, believed to capture in any way the large possible space of false string vacua, for instance as saddles in the action with nonminimal ...
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What do the authors of the paper mean here exactly by path integral?
First of all, please forgive me if i am asking a dumb question. I don't have a physics background. I was reading this paper by Hawking & Hertog on populating string theory landscape and came ...
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Do we think we know how to match the Standard Model from String Theory?
String theory admits a vast number of vacuum solutions, which I gather come from the all the ways of compactifying the geometry of spacetime down to 3+1 dimensions using Calabi-Yau manifolds. I have ...
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Is anti-desitter cosmology internally consistent?
In the string landscape all known vacua that have been found have been anti-desitter (negative cosmological constant).
Is there any cosmological or physical principle that may rule out anti-desitter ...
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Yukawa coupling to the top quark and superstring theories
Can superstring theory give a good reason of why the Yukawa coupling to the top quark is almost "natural" while the remaining leptons and quarks have negligible couplings to the Higgs? I ...
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Questions about "A Quadrillion Standard Models from F-theory"
This afternoon, I tried to read through this paper claiming to "present $\mathcal{O}(10^{15})$ string compactifications with the exact chiral spectrum of the Standard Model of particle physics&...
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Why can't we search string vacua by computer?
I am imagining this:
A database of Calabi-Yau manifolds. More can be added when more are found.
The software picks a random CY manifold, assigns random fluxes etc. It looks at the low energy sector ...
user84158
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Do all string theory vaccua have the same vacuum energy?
Of the $10^{500}$ or so vaccua in string theory. Do they all have the same energy? i.e. are the vaccua degenerate? Or do they have different energies? (If this is even possible.)
It is said that the ...
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From where does the fact that there are $10^{500}$ possible compactifications in string theory? [duplicate]
I have heard for quite a few times that there are $10^{500}$ possible compactifications in string theory. And in one of his lectures, physicist Leaonard Susskind explains that, this comes from the ...
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What experiments could be done *in principle* to help down-select between different versions of string theory?
I understand that string theory (broadly defined) is a solution to quantum gravity. That is, it is a unified theory the explains both quantum phenomena (such as the particles of the standard model ...
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Is there an analogue of string landscape in condensed matter physics?
Possibly not every quantum field theory can be viewed as an effective theory of string theory, and possible effective theories are called the landscape. It's natural to guess that something similar ...
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How many different vacua really are there in the string theory landscape?
How many different vacua are there in the string theory landscape? Different sources give different estimates: some sources talk about the number $10^{500}$, others $10^{272\ 000}$, still others say ...
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Are orbifolded 10d $E_8$ GUTs valid low-energy EQFTs of string theory? Or swampland?
AdAMP recently proposed a string-reminiscent $E_8$ GUT (digest, full) where 6 extra dimensions are compactified on a $\mathbb T^6/(\mathbb Z_3\times\mathbb Z_3)$ orbifold to yield the 4d Standard ...
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Why do string theorists seem to ignore cosmology?
Related and sort of a follow-up question to: If string theory is inconsistent with observations, why hasn't it been rejected yet?
From the answer to that question, string theorists are aware the ...
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