BPST instanton
In theoretical physics, the BPST instanton is the instanton with winding number 1 found by Alexander Belavin, Alexander Polyakov, Albert Schwarz and Yu. S. Tyupkin. It is a classical solution to the equations of motion of SU(2) Yang–Mills theory in Euclidean space-time (i.e. after Wick rotation), meaning it describes a transition between two different vacua of the theory. It was originally hoped to open the path to solving the problem of confinement, especially since Polyakov had proven in 1987 that instantons are the cause of confinement in three-dimensional compact-QED. This hope was not realized, however.
Q1192916
instanton
Concept
Q576728
winding number
UNK
Q2641669
Alexander Belavin
PER
Q277221
Alexander Polyakov
PER
Q2638692
Albert Schwarz
PER
None
Yu. S. Tyupkin
UNK
Q1192873
Yang–Mills theory
Concept
Q1807879
Wick rotation
Concept
Q766202
vacua
Concept
Q505724
confinement
Concept
Q4836279
BPST instanton
Concept
1987-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1987
DATE
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
named after
part of