Is it possible to derive a non-mass gap from the Yang-Mills action?
61603
Why is the Yang–Mills existence and mass gap problem so fundamental?
149741
Review: If true, what makes the vacuum of a local ${\rm U(1)}$ gauge theory unique?
24547
Steps for going from Polyakov action to low-energy effective action (SUGRA?) in String Theory
49300
How does non-Abelian gauge symmetry imply the quantization of the corresponding charges?
26736
Reason for vanishing of the covariant derivative of energy-momentum tensor of matter in general relativity
87328
Expectation of momentum in the bound state
99916
Why Do Glueballs Have Mass, When Individual Gluons Are Massless?
122263
Geometry of Yang-Mills theory
94173
Deriving the Lagrangian for a free particle
77761
Arrow and flow of charge in fermion propagator
88658
Confusion regarding the principle of least action in Landau & Lifshitz "The Classical Theory of Fields"
98712
Are there massless bosons at scales above electroweak scale?
17414
Lagrangian of an effective potential
44953
Gauge symmetries and elementary particles
99312
Why Lagrangian is negative number for a relativistic massive point particle?
151173
Is the quantum action principle of Schwinger a variational principle?
55316
Why is the Yang-Mills gauge group assumed compact and semi-simple?