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Field-theory
New post in Field-theory
Why are differential equations for fields in physics of order two?
November 11th, 2021
differential-geometry
field-theory
differential-equations
Energy-Momentum Tensor in QFT vs. GR
February 8th, 2020
stress-energy-momentum-tensor
field-theory
general-relativity
quantum-field-theory
Is there just one EM field for the whole universe?
May 3rd, 2020
magnetic-fields
electromagnetism
field-theory
How do we know that gravity is spacetime and not a field on spacetime?
February 22nd, 2020
field-theory
metric-tensor
gravity
general-relativity
Relation between Wilsonian renormalization and Counterterm Renormalization
August 1st, 2022
effective-field-theory
field-theory
renormalization
quantum-field-theory
Can particles be in a superposition of times as well as positions?
August 1st, 2022
superposition
field-theory
quantum-mechanics
wave-particle-duality
Deriving Lagrangian density for electromagnetic field
August 1st, 2022
electromagnetism
lagrangian-formalism
field-theory
Why correlation functions?
August 1st, 2022
greens-functions
correlation-functions
propagator
field-theory
Does a non-lagrangian field theory have a stress-energy tensor?
December 27th, 2020
stress-energy-momentum-tensor
conformal-field-theory
field-theory
lagrangian-formalism
quantum-field-theory
Physical difference between gauge symmetries and global symmetries
May 21st, 2020
gauge-invariance
field-theory
gauge-theory
symmetry
Form of the Classical EM Lagrangian
April 1st, 2022
gauge-theory
field-theory
symmetry
lagrangian-formalism
electromagnetism
Can lightning be used to solve NP-complete problems?
December 13th, 2020
computational-physics
electricity
electric-fields
field-theory
lightning
Gauge-fixing of an arbitrary field: off-shell & on-shell degrees of freedom
January 24th, 2020
quantum-field-theory
gauge-theory
field-theory
degrees-of-freedom
gauge
What are quantum fields mathematically?
August 20th, 2022
quantum-field-theory
field-theory
What is a non linear $\sigma$ model?
April 13th, 2020
field-theory
terminology
quantum-field-theory
definition
What is a field, really?
August 1st, 2022
field-theory
education
What, to a physicist, are instantons and the Donaldson invariants?
December 19th, 2020
field-theory
gauge-theory
differential-geometry
mathematical-physics
What is the difference between a complex scalar field and two real scalar fields?
December 6th, 2020
lagrangian-formalism
quantum-field-theory
field-theory
complex-numbers
Why can't General Relativity be written in terms of physical variables?
August 1st, 2022
gravity
field-theory
mathematical-physics
general-relativity
Why does charge conservation due to gauge symmetry only hold on-shell?
August 1st, 2022
gauge-symmetry
noethers-theorem
field-theory
symmetry
lagrangian-formalism
Trick for deriving the stress tensor in any theory
August 1st, 2022
field-theory
noethers-theorem
stress-energy-momentum-tensor
Is there a systematic way to obtain all conserved quantities of a system?
April 2nd, 2022
field-theory
noethers-theorem
conservation-laws
symmetry
group-theory
Can the center of charge and center of mass of an electron differ in quantum mechanics?
September 19th, 2020
electromagnetism
point-particles
mass
charge
field-theory
Difference between field and wavefunction
August 1st, 2022
field-theory
quantum-field-theory
wavefunction
second-quantization
klein-gordon-equation
Why treat complex scalar field and its complex conjugate as two different fields?
June 25th, 2020
quantum-field-theory
lagrangian-formalism
field-theory
complex-numbers
variational-calculus
Does 4D ${\cal N} = 3$ supersymmetry exist?
August 1st, 2022
supergravity
yang-mills
supersymmetry
gauge-theory
field-theory
Quantum mechanics as classical field theory
August 1st, 2022
quantum-mechanics
schroedinger-equation
field-theory
lagrangian-formalism
Differentiating Propagator, Green's function, Correlation function, etc
January 8th, 2021
correlation-functions
field-theory
definition
greens-functions
propagator
What´s the importance of the normalization of the Kinetic term?
August 1st, 2022
normalization
complex-numbers
field-theory
conventions
lagrangian-formalism
History of Electromagnetic Field Tensor
July 27th, 2020
electromagnetism
history
tensor-calculus
field-theory
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