theorems:haags_theorem
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theorems:haags_theorem [2018/03/28 15:24] jakobadmin |
theorems:haags_theorem [2019/05/08 15:48] (current) jakobadmin [Abstract] |
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| <tabbox Abstract> | <tabbox Abstract> | ||
| - | <note tip> | + | <blockquote>In particular Haag's theorem, that one |
| - | The motto in this section is: //the higher the level of abstraction, the better//. | + | cannot consistently define the vacuum in interacting theories, is now considered to have been the wrong way to look |
| - | </note> | + | at the problem, and largely disappears with considerations of RG flow.<cite>[[http://www.felixflicker.com/pdf/QFT_notes_F_Flicker.pdf|A Practical Introduction to Quantum Field Theory]] by Felix Flicker</cite></blockquote> |
| <tabbox Why is it interesting?> | <tabbox Why is it interesting?> | ||
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| introduction to quantum Field theory" by Teller (1995) </cite> | introduction to quantum Field theory" by Teller (1995) </cite> | ||
| </blockquote> | </blockquote> | ||
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| + | <tabbox FAQ> | ||
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| + | -->Why is there no problem in practical QFT calculations?# | ||
| + | see https://physics.stackexchange.com/questions/3983/haags-theorem-and-practical-qft-computations | ||
| + | <-- | ||
| </tabbox> | </tabbox> | ||
theorems/haags_theorem.1522243498.txt.gz · Last modified: 2018/03/28 13:24 (external edit)
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