4
$\begingroup$

We can flip between Minkowkian and Euclidean signature by Wick rotation, and it is a well defined operation, provided there are no non - trivial singularities.

Now, Unitarity in Minkowskian space corresponds to reflection positivity in the Euclidean signature. Does Causality in the Mikowskian space has a well defined and "useful" continuation to the Euclidean signature?

Improve this question
$\endgroup$
3
  • $\begingroup$ In what theory? Related question for fermions. $\endgroup$
    – Qmechanic ♦
    Commented Aug 2, 2018 at 17:08
  • $\begingroup$ Continuum limit of 2D Ising model $\endgroup$
    – Tushar Gopalka
    Commented Aug 2, 2018 at 17:37
  • $\begingroup$ Any theory you can think of? $\endgroup$
    – Tushar Gopalka
    Commented Aug 2, 2018 at 18:17

0

Reset to default

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.