Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Field equation
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
===Classification=== Field equations can be classified in many ways: classical or quantum, nonrelativistic or relativistic, according to the [[Spin (physics)|spin]] or [[mass]] of the field, and the number of components the field has and how they change under coordinate transformations (e.g. [[scalar field]]s, [[vector field]]s, [[tensor field]]s, [[spinor field]]s, [[Twistor theory|twistor field]]s etc.). They can also inherit the classification of differential equations, as [[Linear partial differential equation|linear]] or [[Nonlinear partial differential equation|nonlinear]], the order of the highest derivative, or even as [[fractional differential equation]]s. Gauge fields may be classified as in [[group theory]], as [[abelian group|abelian]] or nonabelian.
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)