Browsing by Author "Nagy, Attila"

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A lattice study of a chirally invariant Higgs-Yukawa model including a higher dimensional Phi(6)-term
(2015-05-11)
Chu, David Y. -J.
;
Jansen, Karl
;
Knippschild, Bastian
;
Lin, C. -J. David
;
Nagy, Attila
We discuss the non-thermal phase structure of a chirally invariant Higgs-Yukawa model on the lattice in the presence of a higher dimensional Phi(6)-term. For the exploration of the phase diagram we use analytical, lattice perturbative calculations of the constraint effective potential as well as numerical simulations. We also present first results of the effects of the Phi(6)-term on the lower Higgs boson mass bounds. (C) 2015 The Authors. Published by Elsevier B.V.
Higgs-Yukawa Model in Chirally Invariant Lattice Field Theory
(2013)
Bulava, John
;
Gerhold, Philipp
;
Jansen, Karl
;
Kallarackal, Jim
;
Knippschild, Bastian
Nonperturbative numerical lattice studies of the Higgs-Yukawa sector of the standard model with exact chiral symmetry are reviewed. In particular, we discuss bounds on the Higgs boson mass at the standard model top quark mass and in the presence of heavy fermions. We present a comprehensive study of the phase structure of the theory at weak and very strong values of the Yukawa coupling as well as at nonzero temperature.