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- TL;DR Summary
- How can an SL(2,C) matrix be decomposed into a product of a boost along the z-axis and a pure rotation?
Hi,
suppose I am given an SL(2C) matrix of the form ##\exp(i\alpha/2 \vec{t}\cdot\vec{\sigma})## where ##\alpha## is the complex rotation angle, ##\vec{t}## the complex rotation axis and ##\vec{\sigma}## the vector of the three Pauli matrices.
I would like to decompose this vector into ##\exp(i\beta/2 \vec{q}\cdot\vec{\sigma})\exp(\gamma\sigma_z)##, where now the rotation angle ##\beta##, axis ##\vec{q}## and the boost parameter ##\gamma## are all real.
Is there a non-brain damaged way to do this? This isn't homework related.
Thank you!
suppose I am given an SL(2C) matrix of the form ##\exp(i\alpha/2 \vec{t}\cdot\vec{\sigma})## where ##\alpha## is the complex rotation angle, ##\vec{t}## the complex rotation axis and ##\vec{\sigma}## the vector of the three Pauli matrices.
I would like to decompose this vector into ##\exp(i\beta/2 \vec{q}\cdot\vec{\sigma})\exp(\gamma\sigma_z)##, where now the rotation angle ##\beta##, axis ##\vec{q}## and the boost parameter ##\gamma## are all real.
Is there a non-brain damaged way to do this? This isn't homework related.
Thank you!