models:speculative_models:grand_unified_theories
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models:speculative_models:grand_unified_theories [2018/03/26 15:14] jakobadmin |
models:speculative_models:grand_unified_theories [2018/05/22 14:23] jakobadmin [Criticism] |
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| - | ====== Grand Unified Theories ====== | + | ====== Grand Unified Models ====== |
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| <tabbox History> | <tabbox History> | ||
| + | * [[http://nautil.us/issue/46/balance/a-brief-history-of-the-grand-unified-theory-of-physics|A Brief History of the Grand Unified Theory of Physics]] by Lawrence Krauss | ||
| <tabbox Criticism> | <tabbox Criticism> | ||
| <blockquote>"Physics is littered with the corpses of dead unified field theories." | <blockquote>"Physics is littered with the corpses of dead unified field theories." | ||
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| <blockquote>“People can construct models with higher symmetries and stand on their nose and try to avoid proton decay,” Nanopoulos said. “OK, you can do it, but … you cannot show it to your mother with a straight face.” https://www.quantamagazine.org/20161215-proton-decay-grand-unification/</blockquote> | <blockquote>“People can construct models with higher symmetries and stand on their nose and try to avoid proton decay,” Nanopoulos said. “OK, you can do it, but … you cannot show it to your mother with a straight face.” https://www.quantamagazine.org/20161215-proton-decay-grand-unification/</blockquote> | ||
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| + | ---- | ||
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| + | **Major Questions still unsolved in GUTs** | ||
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| + | * The Hierarchy Problem, i.e. why $M_W/M_{GUT} <10^{-12}$. | ||
| + | * The absence of gravity | ||
| + | * The family repetition problem, i.e. why are there three families. | ||
| + | * The fermion mass spectrum. | ||
| + | * | ||
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models/speculative_models/grand_unified_theories.txt · Last modified: 2018/05/22 14:23 by jakobadmin
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