Categories
Tags
Gauge-invariance
New post in Gauge-invariance
QED lagrangian: gauge fixing term
August 1st, 2022
electromagnetism
gauge
gauge-invariance
quantum-electrodynamics
lagrangian-formalism
What is the importance of vector potential not being unique?
August 1st, 2022
electromagnetism
magnetostatics
gauge-invariance
vector-fields
gauge-theory
Is local Lorentz + diffeomorphism invariance equivalent to full local Poincaré invariance?
April 27th, 2020
general-relativity
diffeomorphism-invariance
poincare-symmetry
gauge-invariance
gravity
Can we use the term "U(1) gauge invariance" for the free electromagnetic field?
August 1st, 2022
gauge-invariance
gauge-theory
lagrangian-formalism
electromagnetism
"Large" gauge transformation doesn't act as do-nothing transformation in QFT: looking for classical analog
August 1st, 2022
gauge-invariance
topology
gauge-theory
quantum-field-theory
Field strength vanishes iff $A_{\mu}$ is pure gauge
August 12th, 2021
yang-mills
chern-simons-theory
gauge-invariance
gauge-theory
Electric current $j^{\mu}$ in standard QED vs. scalar QED
August 1st, 2022
gauge-invariance
electric-current
quantum-electrodynamics
lagrangian-formalism
When can we add a total time derivative of $f(q, \dot{q}, t)$ to a Lagrangian?
April 2nd, 2020
gauge-invariance
variational-principle
lagrangian-formalism
The gauge covariant derivative and its substitution
August 1st, 2022
gauge-invariance
gauge-theory
electromagnetism
quantum-field-theory
quantum-mechanics
What is $U(1)$ symmetry?
May 8th, 2020
standard-model
symmetry
gauge-theory
gauge-invariance
Showing that Coulomb and Lorenz Gauges are indeed valid Gauge Transformations?
September 28th, 2020
gauge
gauge-invariance
electromagnetism
field-theory
gauge-theory
Gauge fixing and equations of motion
May 10th, 2020
gauge-invariance
quantum-field-theory
gauge-theory
lagrangian-formalism
action
6 independent Einstein field equations?
December 13th, 2020
diffeomorphism-invariance
gauge-invariance
coordinate-systems
differential-geometry
general-relativity
Intuition for gauge parallel transport (Wilson loops)
September 11th, 2020
wilson-loop
quantum-field-theory
gauge-invariance
gauge-theory
gauge
Are gauge choices in electrodynamics really always possible?
October 29th, 2020
gauge
gauge-invariance
electromagnetism
mathematics
Why is the "canonical momentum" for the Dirac equation not defined in terms of the "gauge covariant derivative"?
April 13th, 2020
covariance
gauge-invariance
momentum
operators
electromagnetism
Connection between gauge invariance and Lorentz invariance
January 30th, 2020
field-theory
special-relativity
gauge-invariance
lorentz-symmetry
gauge-theory
Definition of gauge freedom in electromagnetism and general relativity
June 29th, 2020
electromagnetism
gauge-invariance
gauge-theory
general-relativity
coordinate-systems
Why gauge theories have such a success?
August 1st, 2022
gauge-invariance
quantum-field-theory
general-relativity
gauge-theory
Path integral for particle with spin and Dirac propagator
January 12th, 2020
gauge-invariance
path-integral
fermions
quantum-field-theory
Is reparameterization invariance some kind of gauge symmetry?
August 1st, 2022
gauge-symmetry
quantum-field-theory
gauge-invariance
How can a find the symmetry group of a Lagrangian?
March 5th, 2020
lagrangian-formalism
symmetry
field-theory
group-theory
gauge-invariance
What is a gauge theory?
May 26th, 2020
classical-field-theory
gauge-invariance
field-theory
gauge-theory
Gauge fields in Polyakov's treatment of renormalization for nonlinear sigma model
August 30th, 2020
quantum-field-theory
renormalization
gauge-invariance
sigma-models
Local and Global Symmetries
November 10th, 2020
gauge-theory
symmetry
terminology
gauge-invariance
field-theory
Why can't gauge bosons have mass?
August 13th, 2022
mass
gauge-invariance
research-level
quantum-field-theory
What defines a large gauge transformation, really?
July 1st, 2020
gauge-theory
yang-mills
gauge-invariance
topology
group-theory
Is there a spontaneous $U(1)$ symmetry breaking in atomic BECs?
August 10th, 2020
bose-einstein-condensate
gauge-invariance
symmetry-breaking
condensed-matter
Gauge invariant Chern-Simons Lagrangian
August 1st, 2022
homework-and-exercises
quantum-field-theory
gauge-invariance
chern-simons-theory
Does classical electrodynamics have $U(1)$ symmetry? If yes, how?
August 27th, 2020
electromagnetism
quantum-electrodynamics
classical-electrodynamics
gauge-invariance
←
1
2
3
4
→