I am new to this topic, so I do not have much knowledge of these. When discussing vacuum instability in QFT, higgs self-coupling becoming negative at high-energy scale when renormalized is said to indicate a problem.

  1. Does this cause some calculation/theoreticl problems other than vacuum instability?

  2. Why and how does vacuum instability rise out of Higgs self-coupling becoming negative? QFT calculations are done assuming some vacuum, so I wonder what this is supposed to mean.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.