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This Concept Map, created with IHMC CmapTools, has information related to: Differences between TGD and string models.cmap, DIFFERENCES BETWEEN TGD AND STRING MODELS 3. TGD predicts also string like objects and string world sheets carrying fermion fields. TGD strings however differ from those of string models: strings/string world sheets can become knotted in 3-space/ 4-D space-time, Spontaneous compactification leading to landscape catastrophe is not needed in TGD but has as counterpart M^8-H duality defining "number theoretic compact- ification" and giving M^4xCP_2 and stan- dard model symmet- ries number theoretic meaning., Induced field concept implying geometrization of classical fields and of quantum numbers, and sub-manifold gravity plus powerful constraints between classical fields but also implying problem due to the lack of linear superposition and solved by superposition of effects of fields made possible by many-sheeted space-time, DIFFERENCES BETWEEN TGD AND STRING MODELS 1. Induced field concept implying geometrization of classical fields and of quantum numbers, and sub-manifold gravity plus powerful constraints between classical fields, In string models spontaneous compactitication gives rise to huge number of target spaces and leads to landscape catastrophe and loss of predictivity. whereas in TGD imbedding space is non-dynamical and expected to be highly unique from the mathe- matical existence of WCW metric., Induced field concept implying geometrization of classical fields and of quantum numbers, and sub-manifold gravity plus powerful constraints between classical fields but also implying problems with the interpretation of classical ew and color fields resolved by the hierarchy of Planck constants, p-adic length scale hierarchy, and hierarchy of ew and QCD like physics, DIFFERENCES BETWEEN TGD AND STRING MODELS 5. Spontaneous compactification leading to landscape catastrophe is not needed in TGD, DIFFERENCES BETWEEN TGD AND STRING MODELS 4. In string models spontaneous compactitication gives rise to huge number of target spaces and leads to landscape catastrophe and loss of predictivity., DIFFERENCES BETWEEN TGD AND STRING MODELS 2. String world sheets in 10/11-D space- time are replaced with 4-D space-time surfaces, String world sheets in 10/11-D space- time are replaced with 4-D space-time surfaces so that 4-D space-time is present from beginning rather than resulting by spontaneous compactication or as brane, TGD predicts also string like objects and string world sheets carrying fermion fields. TGD strings however differ from those of string models: strings/string world sheets can become knotted in 3-space/ 4-D space-time giving rise to 1-braids/ 2-braids. This applies also to flux tubes idealizable as strings. These play a key role in TGD inspired quantum biology: in particular, topological quantum computation becomes possible.
