M-theory model-building and proton stability

被引：57

作者：

Ellis, J ^{[1
]}

Faraggi, AE

Nanopoulos, DV

机构：

[1] CERN, Div Theory, CH-1211 Geneva, Switzerland

[2] Univ Florida, Inst Fundamental Theory, Dept Phys, Gainesville, FL 32611 USA

[3] Texas A&M Univ, Ctr Theoret Phys, Dept Phys, College Stn, TX 77843 USA

[4] Houston Adv Res Ctr, Astroparticle Phys Grp, The Woodlands, TX 77381 USA

[5] Acad Athens, Chair Theoret Phys, Div Nat Sci, Athens 10679, Greece

来源：

PHYSICS LETTERS B | 1998年 / 419卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(97)01294-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the problem of baryon stability in M theory, starting from realistic four-dimensional string models constructed using the free-fermion formulation of the weakly-coupled heterotic string. Suitable variants of these models manifest an enhanced custodial gauge symmetry that forbids to all orders the appearance of dangerous dimension-five baryon-decay operators. We exhibit the underlying geometric (bosonic) interpretation of these models, which have a Z(2) x Z(2) orbifold structure similar, but not identical, to the class of Calabi-Yau threefold compactifications of M and F theory investigated by Voisin and Borcea. A related generalization of their work may provide a solution to the problem of proton stability in M theory. (C) 1998 Elsevier Science B.V.

引用

页码：123 / 131

页数：9

共 67 条

[1] COMPREHENSIVE ANALYSIS OF DATA PERTAINING TO THE WEAK NEUTRAL CURRENT AND THE INTERMEDIATE-VECTOR-BOSON MASSES [J].