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PUBDB-2015-06183

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Lattice study of the Higgs-Yukawa model in and beyond the Standard Model

Chu, D. Y. -. (Corresponding author) ; Jansen, K.DESY* ; Knippschild, B. ; Lin, C. -. D. ; Nagai, K.-I. ; Nagy, A.DESY*

2015
SISSA Trieste

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Please use a persistent id in citations: doi:10.22323/1.251.0230

Report No.: DESY-15-205; arXiv:1510.08620

Abstract: We derive finite-size scaling formulae for four-dimensional Higgs-Yukawa models 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 confirm or rule out the possibility of having non-trivial fixed points in the Higgs-Yukawa models. 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.

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Contributing Institute(s):

1. NIC (ZEU-NIC)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2015

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