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Gauge-theory
New post in Gauge-theory
First class and second class constraints
December 21st, 2020
gauge-theory
constrained-dynamics
hamiltonian-formalism
field-theory
Reduction of Nambu-Goto action to true degrees of freedom
November 27th, 2020
constrained-dynamics
string-theory
lagrangian-formalism
gauge-theory
hamiltonian-formalism
Why do negative norm states break unitarity?
May 16th, 2020
ghosts
unitarity
quantization
gauge-theory
quantum-field-theory
How to include Berry connection in Hamiltonian?
August 10th, 2020
gauge-theory
berry-pancharatnam-phase
quantum-mechanics
hamiltonian
Wilson loops and gauge invariant operators (Part 2)
June 13th, 2020
yang-mills
quantum-field-theory
string-theory
gauge-theory
quantum-chromodynamics
What is the importance of vector potential not being unique?
August 1st, 2022
magnetostatics
gauge-theory
electromagnetism
gauge-invariance
vector-fields
Gupta-Bleuler and Lorenz Gauge: I don't understand the principle behind Gupta-Bleuler
January 31st, 2020
gauge-theory
quantum-field-theory
quantization
quantum-electrodynamics
"Large" gauge transformation doesn't act as do-nothing transformation in QFT: looking for classical analog
August 1st, 2022
topology
gauge-theory
quantum-field-theory
gauge-invariance
Can we use the term "U(1) gauge invariance" for the free electromagnetic field?
August 1st, 2022
gauge-invariance
gauge-theory
lagrangian-formalism
electromagnetism
Hodge star operator on curvature?
April 17th, 2022
differential-geometry
tensor-calculus
gauge-theory
curvature
yang-mills
How many fundamental forces could there be?
August 1st, 2022
gauge-theory
forces
What is the physical interpretation of harmonic coordinates?
August 1st, 2022
general-relativity
differential-geometry
gauge-theory
coordinate-systems
In nonabelian gauge theory, does the ordinary or covariant derivative go into the statement of current conservation?
October 13th, 2020
color-charge
noethers-theorem
gauge-theory
conservation-laws
quantum-field-theory
Vector Potential for Magnetic field when the field is not in simply-connected region
August 1st, 2022
electromagnetism
mathematical-physics
differential-geometry
gauge-theory
topology
Why does electric field intensity $E$ can be uniquely determined by its divergence and curl?
August 1st, 2022
electromagnetism
electricity
gauge-theory
classical-electrodynamics
Field strength vanishes iff $A_{\mu}$ is pure gauge
August 12th, 2021
gauge-theory
yang-mills
gauge-invariance
chern-simons-theory
The gauge covariant derivative and its substitution
August 1st, 2022
quantum-mechanics
quantum-field-theory
electromagnetism
gauge-theory
gauge-invariance
How do Faddeev-Popov (FP) ghosts help path integrals?
December 31st, 2020
quantum-field-theory
gauge-theory
path-integral
brst
ghosts
What is $U(1)$ symmetry?
May 8th, 2020
gauge-invariance
gauge-theory
standard-model
symmetry
Minimal vs. Non-minimal coupling in General Relativity
February 20th, 2020
general-relativity
qft-in-curved-spacetime
gauge-theory
lagrangian-formalism
gravity
Making the connection between gauge theory and fiber bundles precise
August 13th, 2020
differential-geometry
gauge-theory
Showing that Coulomb and Lorenz Gauges are indeed valid Gauge Transformations?
September 28th, 2020
gauge
field-theory
electromagnetism
gauge-invariance
gauge-theory
Geometrical significance of gauge invariance of the QED Lagrangian
August 1st, 2022
gauge-theory
quantum-electrodynamics
quantum-field-theory
What's the difference between perturbative QCD, non-perturbative QCD, and gauge theory QCD?
August 1st, 2022
field-theory
gauge-theory
quantum-chromodynamics
perturbation-theory
non-perturbative
Non-inertial frames in Lagrangian mechanics?
August 4th, 2020
lagrangian-formalism
coordinate-systems
inertial-frames
gauge-theory
reference-frames
Einstein-Yang-Mills Connections
August 1st, 2022
general-relativity
differential-geometry
gauge-theory
yang-mills
History of the names "Feynman-gauge" & "Landau-gauge". How arised & how settled?
August 1st, 2022
gauge
history
terminology
gauge-theory
quantum-field-theory
Why do we use gauges in Maxwell equation?
August 1st, 2022
electromagnetism
potential
gauge-theory
maxwell-equations
gauge
Gauge fixing and equations of motion
May 10th, 2020
gauge-invariance
action
lagrangian-formalism
gauge-theory
quantum-field-theory
What forbids the existence of a $\lambda (A^\mu A_\mu)^2$ term in the Stueckelberg action?
February 22nd, 2020
higgs
lagrangian-formalism
gauge-theory
quantum-electrodynamics
renormalization
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