Both sides previous revision Previous revision Next revision | Previous revision | ||
advanced_notions:quantum_field_theory:solitons [2018/03/26 11:14] jakobadmin [Researcher] |
advanced_notions:quantum_field_theory:solitons [2018/05/05 12:38] (current) jakobadmin ↷ Links adapted because of a move operation |
||
---|---|---|---|
Line 3: | Line 3: | ||
<tabbox Why is it interesting?> | <tabbox Why is it interesting?> | ||
- | [[advanced_tools:feynman_diagrams|Feynman diagrams]] do not describe everything that can happen in a [[theories:quantum_theory:quantum_field_theory|quantum field theory]]. There can be classical solutions of the field equations that describe larger lumps of field excitations that aren't describable by Feynman diagrams. | + | [[advanced_tools:feynman_diagrams|Feynman diagrams]] do not describe everything that can happen in a [[theories:quantum_field_theory:canonical|quantum field theory]]. There can be classical solutions of the field equations that describe larger lumps of field excitations that aren't describable by Feynman diagrams. |
Classical solutions of the field equations with finite energy are called solitons. | Classical solutions of the field equations with finite energy are called solitons. | ||
Line 10: | Line 10: | ||
In addition, there is an [[http://www.pbs.org/wgbh/nova/blogs/physics/2011/12/beautiful-losers-kelvins-vortex-atoms/|old dream]] that all elementary particles could be explained as topological solitons. (There are lots of problems with this idea, but at least, [[https://plus.google.com/+UrsSchreiber/posts/Z2LfHsyxgR8|instantons come somewhat close]].) | In addition, there is an [[http://www.pbs.org/wgbh/nova/blogs/physics/2011/12/beautiful-losers-kelvins-vortex-atoms/|old dream]] that all elementary particles could be explained as topological solitons. (There are lots of problems with this idea, but at least, [[https://plus.google.com/+UrsSchreiber/posts/Z2LfHsyxgR8|instantons come somewhat close]].) | ||
+ | |||
+ | While solitons are rare in particle physics, they are found frequently in condensed matter physics. | ||
---- | ---- | ||
Line 84: | Line 86: | ||
* Non-linearity of the wave equations can result in waves that get __steeper__ over time. A good example are the waves that can be observed at a beach. | * Non-linearity of the wave equations can result in waves that get __steeper__ over time. A good example are the waves that can be observed at a beach. | ||
+ | |||
+ | ---- | ||
+ | |||
+ | **Recommended Textbooks** | ||
+ | |||
+ | |||
+ | * Solitons and Instantons by Ramamurti Rajaraman - is the best introductory book on solitons and related topics | ||
+ | * Topological Solitons by Manton and Sutcliff - is the second-best introductory book on solitons | ||
+ | * [[http://scipp.ucsc.edu/~haber/ph218/classicallumpsreview_Infanger.pdf|Classical lumps and their quantum descendants]] by Sidney Coleman - a "must read" lecture for anyone interested in solitons | ||
+ | * Classical Solutions in Quantum Field Theory: Solitons and Instantons by Erick Weinberg - contains several helpful chapters | ||
+ | * Classical Theory of Gauge Fields by Rubakov - is great to dive deeper and contains many alternative perspectives that can't be found anywhere else. | ||
+ | |||
+ | * Quarks, Leptons & Gauge Fields by Kerson Huang - contains several extremely helpful chapters regarding solitons etc. | ||
+ | * Quantum Field Theory by Lewis H. Ryder - contains, like Huang's book - a particular nice chapter on solitons and instantons | ||
<tabbox Researcher> | <tabbox Researcher> |