Why is it problematic to regard the Lorentz group as ${\rm SO}(4, \mathbb{C})$?
106863
Special relativity and imaginary coefficient of the time coordinate
38723
Can Poincare representations be embedded in non-standard Lorentz representations?
149973
Showing the following coordinate rings are not isomorphic
44239
Why the extra term $\frac{1}{2}(\partial_{\rho}A^{\rho})^2$ in the photon Lagrangian?
107594
Lie bracket for Lie algebra of $SO(n,m)$
113072
Index notation Lorentz transfromation matrix
90845
Is this posible in GR $g_{ab}g^{ab}=1$?
15221
How to explain these inconsistencies in the R+L=J theory?
87125
Does action really have to be Lorentz-invariant in SR?
50572
Is there a general theorem stating why the restricted Lorentz group's exponential map is surjective?
116427
$(c^{\mu}\partial_{\mu}-m)\phi(x)=0$ not Lorentz-invariant?
126173
From irreducible representations of the Lorentz algebra to irreducible representations of the Lorentz group
58135
Quotient group $SL(2,\mathbb{R})/SO(2,\mathbb{R})$
48733
Definition of the Pauli group and the Clifford group
148206
In what sense is the renormalization group equation a group?
7530
Why this $\sigma \pi \sigma^{-1}$ keeps appearing in my group theory book? (cycle decomposition)
69423
Pure Lorentz boost; transpose $\neq$ inverse?