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Classical-field-theory
New post in Classical-field-theory
Frasca's mapping of classical Yang-Mills to $\phi^4$ theory
November 21st, 2020
yang-mills
quantum-field-theory
classical-field-theory
Is $\phi^4$ theory in 4d conformally invariant at the classial level?
March 13th, 2020
classical-field-theory
lagrangian-formalism
conformal-field-theory
stress-energy-momentum-tensor
scale-invariance
Why is velocity defined as 4-vector in relativity?
August 19th, 2020
classical-field-theory
general-relativity
special-relativity
electromagnetism
relativity
Relativistic center of mass
December 31st, 2020
symmetry
special-relativity
research-level
poincare-symmetry
classical-field-theory
Retarded and advanced Green's function and Feynman propagator
June 16th, 2021
greens-functions
propagator
classical-field-theory
quantum-field-theory
electromagnetism
Are all fields in the universe we know of quantum fields?
August 20th, 2020
classical-field-theory
field-theory
quantum-field-theory
What is the point of complex fields in classical field theory?
March 10th, 2020
classical-mechanics
classical-field-theory
complex-numbers
field-theory
Classical field limit of the electron quantum field
December 22nd, 2020
classical-field-theory
quantum-field-theory
quantum-mechanics
Counting Degrees of Freedom in Field Theories
August 1st, 2022
gauge-theory
classical-field-theory
degrees-of-freedom
quantum-field-theory
field-theory
What is a gauge theory?
May 26th, 2020
field-theory
gauge-theory
classical-field-theory
gauge-invariance
Invariance of Action vs. Lagrangian in Noether's theorem?
August 1st, 2022
lagrangian-formalism
classical-field-theory
symmetry
action
noethers-theorem
Charged particle as observed from an inertial and a non-inertial frame of reference
August 1st, 2022
classical-electrodynamics
classical-field-theory
electromagnetic-radiation
electromagnetism
equivalence-principle
What is the actual form of Noether current in field theory?
August 1st, 2022
conservation-laws
classical-field-theory
noethers-theorem
lagrangian-formalism
variational-principle
Small oscillations of heavy string
July 9th, 2020
classical-field-theory
classical-mechanics
oscillators
perturbation-theory
Physical interpretation of fields in QFT
August 1st, 2022
quantum-field-theory
classical-field-theory
field-theory
Which exact solutions of the classical Yang-Mills equations are known?
August 1st, 2022
gauge-theory
research-level
classical-field-theory
yang-mills
Tree-level QFT and classical fields/particles
August 6th, 2022
classical-field-theory
semiclassical
quantum-field-theory
classical-mechanics
perturbation-theory
On a trick to derive the Noether current
August 1st, 2022
classical-field-theory
noethers-theorem
variational-principle
lagrangian-formalism
mathematical-physics
Relation between Noether's charge and the generator of a $U(1)$ symmetry
January 17th, 2020
quantum-field-theory
classical-field-theory
noethers-theorem
symmetry
Why are the Euler-Lagrange equations invariant if we add a surface term to the action?
August 1st, 2022
classical-field-theory
action
lagrangian-formalism
boundary-terms
variational-principle
Why can't $p^0$ change sign under a proper orthochronous Lorentz transformation?
February 4th, 2020
quantum-field-theory
mathematical-physics
lorentz-symmetry
classical-field-theory
special-relativity
Energy momentum tensor from generalized Noether current
January 22nd, 2020
stress-energy-momentum-tensor
noethers-theorem
classical-field-theory
energy-conservation
conservation-laws
Noether charge for Lorentz Transformation in terms of creation / annihilation operators
August 1st, 2022
quantum-mechanics
classical-mechanics
classical-field-theory
quantum-field-theory
homework-and-exercises
Derivatives with upper and lower indices
August 1st, 2022
electromagnetism
homework-and-exercises
lagrangian-formalism
differentiation
classical-field-theory
Global $U(1)$ transformation properties of gauge fields
August 1st, 2022
electromagnetism
classical-field-theory
gauge-invariance
gauge-theory
quantum-field-theory
Why don't people use Hamilton's equations for a relativistic free particle?
August 1st, 2022
classical-field-theory
field-theory
hamiltonian-formalism
point-particles
special-relativity
Noether's Theorem in Classical Field theory Confusion
November 2nd, 2020
lagrangian-formalism
symmetry
noethers-theorem
classical-field-theory
conservation-laws
Need for a side book for E. Soper's Classical Theory Of Fields
August 1st, 2022
classical-mechanics
classical-field-theory
field-theory
resource-recommendations
Hamilton formalism for Dirac spinors
March 22nd, 2020
quantum-field-theory
hamiltonian-formalism
dirac-equation
poisson-brackets
classical-field-theory
How do fields transform under special conformal transformations?
March 27th, 2020
field-theory
conformal-field-theory
classical-field-theory
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