The main goal of string phenomenology is to find a convincing connection be- tween realistic particle physics and string theory. An extended object called D-brane in string theory is shown as a very powerful tool to resolve phenomenology problems. D-branes, D standing for Dirichlet boundary conditions, naturally appear in the T- dual space along one of the toroidally compactified dimensions in non-perturbative Type I theory. A D-brane forms an U(1) gauge group and the group structure can be enriched by Chan-Paton indices with multiple coincided D-branes and orientifold ac- tions. Oribfolds define fixed points of the compactified space and break the theory to N = 1 supersymmetry, and the extended orientifold from world-sheet parity projects the brane image to help cancel the anomalies. Strings at the intersections of two D-branes (Type IIA) form massless chiral fermions as bi-fundamental representations of the gauge groups of the intersecting branes. With these properties, we construct Grand Unification Theory (GUT) and standard-like models by intersecting D-brane configuration on T6/(Z2 × Z2) orientifold. Also, supergravity and geometrical fluxes are introduced to stabilize the moduli. In this dissertation, first a brief review of the D-brane theory is discussed, then the complete construction of D-brane configuration on T6/(Z2 × Z2) is presented, and finally some realistic Trinification, Pati-Salam, SU(5) and flipped SU(5) models are constructed and discussed. We present the models both in D-brane wrapping numbers and the corresponding particle spectra.

京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第20168号 / 理博第4253号 / 新制||理||1611(附属図書館) / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)准教授 福間 將文, 教授 川合 光, 教授 畑 浩之 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM