Aspects of type I string phenomenology

被引:222
作者
Ibáñez, LE
Muñoz, C
Rigolin, S
机构
[1] Univ Autonoma Madrid, Dept Fis Teor C XI, E-28049 Madrid, Spain
[2] Univ Autonoma Madrid, Inst Fis Teor C XVI, E-28049 Madrid, Spain
关键词
Type I string; phenomenology; coupling unification;
D O I
10.1016/S0550-3213(99)00264-3
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We study different phenomenological aspects of compact, D = 4, N = 1 Type IIB orientifolds considered as models for unification of the standard model and gravity, We discuss the structure of the compactification, string and unification scales depending on the different possible D-brane configurations. It is emphasized that in the context of Type I models the M-W/M-Planck hierarchy problem is substantially alleviated and may be generated by geometrical factors. We obtain the effective low-energy supergravity Lagrangian and derive the form of soft SUSY-breaking terms under the assumption of dilaton/moduli dominance. We also discuss the role of anomalous U(1)'s and of twisted moduli in this class of theories. A novel mechanism based on the role of singularities is suggested to achieve consistency with gauge coupling unification in low string scale models. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:43 / 80
页数:38
相关论文
共 101 条
[51]   Eleven-dimensional super-gravity on a manifold with boundary [J].
Horava, P ;
Witten, E .
NUCLEAR PHYSICS B, 1996, 475 (1-2) :94-114
[52]   Heterotic and Type I string dynamics from eleven dimensions [J].
Horava, P ;
Witten, E .
NUCLEAR PHYSICS B, 1996, 460 (03) :506-524
[53]   FERMION MASSES AND MIXING ANGLES FROM GAUGE SYMMETRIES [J].
IBANEZ, L ;
ROSS, GG .
PHYSICS LETTERS B, 1994, 332 (1-2) :100-110
[54]   DUALITY-ANOMALY CANCELLATION, MINIMAL STRING UNIFICATION AND THE EFFECTIVE LOW-ENERGY LAGRANGIAN OF 4D STRINGS [J].
IBANEZ, LE ;
LUST, D .
NUCLEAR PHYSICS B, 1992, 382 (02) :305-361
[55]   COMPUTING THE WEAK MIXING ANGLE FROM ANOMALY CANCELLATION [J].
IBANEZ, LE .
PHYSICS LETTERS B, 1993, 303 (1-2) :55-62
[56]   DISCRETE GAUGE SYMMETRIES AND THE ORIGIN OF BARYON AND LEPTON NUMBER CONSERVATION IN SUPERSYMMETRIC VERSIONS OF THE STANDARD MODEL [J].
IBANEZ, LE ;
ROSS, GG .
NUCLEAR PHYSICS B, 1992, 368 (01) :3-37
[57]   HETEROTIC STRINGS IN SYMMETRIC AND ASYMMETRIC ORBIFOLD BACKGROUNDS [J].
IBANEZ, LE ;
MAS, J ;
NILLES, HP ;
QUEVEDO, F .
NUCLEAR PHYSICS B, 1988, 301 (01) :157-196
[58]  
IBANEZ LE, HEPTH9505098
[59]  
IBANEZ LE, HEPTH9802103
[60]  
IBANEZ LE, HEPPH9804236