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Instantons
New post in Instantons
About solitons, what is the difference between kinks and vortices?
August 25th, 2020
solitons
quantum-field-theory
string-theory
instantons
Understanding typical non-perturbative calculations in QFT
August 1st, 2022
quantum-field-theory
path-integral
quantum-anomalies
instantons
non-perturbative
Solving Quantum Tunnelling Without Wick Rotation
March 22nd, 2020
wick-rotation
path-integral
instantons
Can massive fermions have zero modes?
June 22nd, 2020
instantons
quantum-field-theory
quantum-chromodynamics
Difference between instantons and sphalerons
January 17th, 2020
quantum-field-theory
instantons
topological-field-theory
baryogenesis
leptogenesis
What is "localisation" of instantons?
August 1st, 2022
quantum-field-theory
gauge-theory
path-integral
topological-field-theory
instantons
How do instantons cause vacuum decay?
August 1st, 2022
instantons
quantum-field-theory
vacuum
The meaning of imaginary time
August 10th, 2020
complex-numbers
wick-rotation
instantons
time
path-integral
Instantons, anomalies, and 1-loop effects
December 10th, 2020
quantum-field-theory
instantons
non-perturbative
quantum-anomalies
regularization
The Origins of Instantons from Path Integrals
August 1st, 2022
instantons
quantum-field-theory
path-integral
perturbation-theory
non-perturbative
How to understand "analytical continuation" in the context of instantons?
August 1st, 2022
analyticity
quantum-field-theory
quantum-tunneling
wick-rotation
instantons
Does the existence of instantons imply non-trivial cohomology of spacetime?
June 3rd, 2020
quantum-field-theory
spacetime
gauge-theory
topology
instantons
difference between classical vacuum solutions and instantons
August 1st, 2022
non-perturbative
quantum-field-theory
topological-field-theory
instantons
solitons
Understanding instantons in pure Yang-Mills theory
December 20th, 2020
quantum-field-theory
topology
beyond-the-standard-model
classical-field-theory
instantons
How can I understand the tunneling problem by Euclidean path integral where the quadratic fluctuation has a negative eigenvalue?
August 1st, 2022
instantons
quantum-field-theory
path-integral
wick-rotation
quantum-tunneling
Instantons in Witten's supersymmetry and Morse theory
August 1st, 2022
instantons
supersymmetry
differential-geometry
mathematical-physics
quantum-mechanics
How does Euclidean Quantum Field Theory describe tunneling?
July 26th, 2022
path-integral
wick-rotation
instantons
quantum-field-theory