Lattice study of the higgs-yukawa model in and beyond the standard model

David Y.J. Chu, Karl Jansen, Bastian Knippschild, Chi-Jen Lin, Kei Ichi Nagai, Attila Nagy

Research output: Contribution to journalConference articlepeer-review


We derive finite-size scaling formulae for four-dimensionalHiggs-Yukawamodels near the Gaussian fixed point. These formulae will play an essential role in future, detailed investigation of such models. In particular, they can be used to determine the nature of the observed phase transitions, and confirmor rule out the possibility of having non-Trivial fixed points in the Higgs-Yukawamodels. Our scaling formula for Binder's cumulant is tested against lattice simulations carried out at weak couplings, and good agreement is found. As a separate project, we also present preliminary results from our study of a chirally-invariant Higgs-Yukawa model including a dimension-six operator at finite temperature. Our work provides first indications of first-order temperature-induced phase transitions near the infinite cutoff limit in this model.

Original languageEnglish
Article number230
JournalProceedings of Science
StatePublished - 1 Jan 2015
Event33rd International Symposium on Lattice Field Theory, LATTICE 2015 - Kobe, Japan
Duration: 14 Jul 201518 Jul 2015

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