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Spinors
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Charge conjugation in Dirac equation
June 8th, 2022
dirac-equation
spinors
dirac-matrices
charge-conjugation
cpt-symmetry
Meaning of the vector expectation value $\langle \mathbf{S} \rangle $
June 9th, 2022
spinors
quantum-spin
operators
quantum-mechanics
What is the dimension/unit of a spinor?
June 1st, 2022
dimensional-analysis
spinors
Why normalizing spin state is different? Why no need dxdydz?
June 8th, 2022
spinors
quantum-mechanics
hilbert-space
What's the difference between spinor and spin?
November 25th, 2020
definition
spinors
special-relativity
angular-momentum
quantum-spin
Why do electrons and positrons exhibit opposite helical motion in a magnetic field?
June 1st, 2022
particle-physics
spinors
electromagnetism
quantum-electrodynamics
Transposition of spinors
December 14th, 2021
fermions
spinors
conventions
grassmann-numbers
Density matrices vs Pauli matrices
June 18th, 2022
spinors
density-operator
Behaviour of Dirac Bilinears
June 1st, 2022
dirac-equation
spinors
covariance
special-relativity
dirac-matrices
Spinors and Probabilities of Electron-Positron Pair
June 18th, 2022
homework-and-exercises
quantum-mechanics
spinors
probability
quantum-spin
Calculation of Parity in Quantum Field Theory
October 26th, 2020
quantum-field-theory
dirac-matrices
parity
spinors
symmetry
Energy Spectrum of pair of spin-1/2 particles with general Hamiltonian
June 18th, 2022
homework-and-exercises
hamiltonian
spinors
quantum-spin
quantum-mechanics
Deriving Pauli Matrices
October 26th, 2020
spinors
group-representations
conventions
What is the difference between a Pauli spinor, a Weyl spinor, and a Cartan spinor?
June 1st, 2022
clifford-algebra
terminology
representation-theory
lie-algebra
spinors
Partial completeness relation for Dirac spinors
June 17th, 2022
matrix-elements
particle-physics
spinors
dirac-matrices
trace
Orthogonality relations for spinors of plane wave solution
June 9th, 2022
spinors
dirac-equation
Spinor inner products
June 2nd, 2022
standard-model
spinors
dirac-matrices
Rotation of a spin-1/2 system
June 18th, 2022
spinors
quantum-mechanics
quantum-spin
rotation
Question about Majorana fermion and Majorana representation
June 1st, 2022
neutrinos
majorana-fermions
field-theory
representation-theory
spinors
Pauli matrices and Lorentz transformations
June 9th, 2022
dirac-matrices
special-relativity
lorentz-symmetry
spinors
dirac-equation
Spinor formalism in QFT
June 9th, 2022
poincare-symmetry
quantum-field-theory
special-relativity
vectors
spinors
General definition of vector, spinor, and spin
June 18th, 2022
representation-theory
spinors
vectors
quantum-spin
angular-momentum
How do I operate on a spin state with a sigma operator?
June 18th, 2022
spinors
bloch-sphere
quantum-mechanics
quantum-spin
Do I need Gamma matrices in Majorana representation in the Lagrangian of a Majorana fermion?
June 18th, 2022
clifford-algebra
representation-theory
spinors
dirac-matrices
majorana-fermions
The true dimension of Dirac field
May 5th, 2020
quantum-electrodynamics
spinors
dirac-equation
dimensional-analysis
Complex conjugation of Weyl Spinors
June 17th, 2022
conventions
spinors
special-relativity
lorentz-symmetry
group-representations
Gamma matrices invariant under Lorentz transformation
June 18th, 2022
lorentz-symmetry
dirac-matrices
spinors
Hermitian Adjoint of Spinor
June 1st, 2022
quantum-field-theory
definition
spinors
quantum-mechanics
hilbert-space
How to prove that Weyl spinors equations are Lorentz invariant?
June 18th, 2022
spinors
special-relativity
homework-and-exercises
lorentz-symmetry
dirac-equation
Dirac Lagrangian after decomposing the Dirac spinor into Weyl spinors
June 13th, 2022
homework-and-exercises
lagrangian-formalism
dirac-equation
spinors
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