arXiv subjects

She-Sheng XUE

Publications and source records attributed to She-Sheng XUE.

5 recordsLinked to original sources

arXiv1994

A Possible Origin of the Wilson Lattice Fermion

Considering relevant and irrelevant high-dimension operators for ordinary and mirror fermions respectively, we show that the Wilson lattice fermion can originate from a spontaneous symmetry breaking phenomenon. Ward identities, due to symmetries at the cutoff, guarantee the cancellation of mirror-fermion contributions and the infrared limit can be achieved. The Wilson parameter turns out to be fixed at $r\simeq 0.18$, where the vacuum energy of the system is minimized.

hep-lat↗

arXiv1994

The Propagators of Gauge Bosons on a lattice

We analyse the problem of the generation of mass in the gauge boson sector on the (Planck) lattice. We obtain a dynamical scenario quite similar to the popular Higgs-mechanism, with the important difference that no Higgs-type excitation is present in our theory. By fixing the mass of the $Z^\circ$-boson and the renormalized gauge couplings at their experimental values, we get for the top quark mass $m_t\simeq 149$GeV and for the $ρ$-parameter the very small value $ρ\sim 10^{-6}$.

hep-lat↗

arXiv1994

External magnetic fields in gauge theories

A general discussion is presented of the response of a gauge-field system to external magnetic fields, in the light of a theorem due to S. Elitzur. As a result a natural understanding emerges of some recent puzzling results from lattice MC simulations, as well as of the phenomenon of ``perfect diamagnetism'' of non-abelian gauge theories, discovered almost ten years ago.

hep-lat↗

arXiv1994

A Critical Surface of Chiral-invariant System with Gauge Boson and Fermions

In the chirally-invariant context of the $U_{em}(1)$ gauge interaction and four-fermion interactions for ordinary and mirror fermions, the Schwinger-Dyson equation for the fermion self-energy function is studied on a lattice. We find that a sensible infrared limit can be defined on a critical surface, which is consistent with the critical line found in the continuum theory.

hep-lat↗

arXiv1993

Aspects of Dynamical Symmetry Breaking on a Lattice

In the context of four-fermion and gauge interactions, the Schwinger-Dyson equation for the fermion self-energy function is studied with the Wilson fermion on a lattice. We find that the critical line obtained by Bardeen, Leung and Love is modified. No additional Goldstone bosons appear in the spectrum of fundamental particles. Massive solutions to the Schwinger-Dyson equation turn out to be possible for a small gauge coupling.

hep-lat↗