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Intersecting Dp-branes often give rise to chiral fermions living on their intersections. We study the construction of four-dimensional chiral gauge theories by considering configurations of type II D(3+n)-branes wrapped on non-trivial…

High Energy Physics - Theory · Physics 2009-10-09 G. Aldazabal , S. Franco , L. E. Ibanez , R. Rabadan , A. M. Uranga

We investigate the one-parameter Calabi-Yau models and identify families of D5-branes which are associated to lines embedded in these manifolds. The moduli spaces are given by sets of Riemann curves, which form a web whose intersection…

High Energy Physics - Theory · Physics 2011-02-25 Marco Baumgartl , Simon Wood

All the possible three-family ${\cal N}=1$ supersymmetric Pati-Salam models constructed with intersecting D6-branes from Type IIA orientifolds on $T^6/(\mathbb{Z}_2\times \mathbb{Z}_2)$ are recently presented in arXiv: 2112.09632. Taking…

High Energy Physics - Theory · Physics 2022-08-17 Weikun He , Tianjun Li , Rui Sun , Lina Wu

We compute the Yukawa couplings among chiral fields in toroidal Type II compactifications with wrapping D6-branes intersecting at angles. Those models can yield realistic standard model spectrum living at the intersections. The Yukawa…

High Energy Physics - Theory · Physics 2009-11-10 D. Cremades , L. E. Ibanez , F. Marchesano

This thesis investigates correspondences between open and closed strings. This is done on the level of coupled open-closed moduli spaces and from a string field theoretic point of view. The construction of boundary string field theory on…

High Energy Physics - Theory · Physics 2008-12-15 Marco Baumgartl

We consider the interactions between Dp-branes intersecting at an arbitrary number of angles in the context of type II string theory. For cosmology purposes we concentrate in the theory on R^{3,1} x T^6. Interpreting the distance between…

High Energy Physics - Theory · Physics 2009-11-07 M. Gomez-Reino , I. Zavala

We obtain an exact solution of the supergravity equations of motion in which the four-dimensional observed universe is one of a number of colliding D3-branes in a Calabi-Yau background. The collision results in the ten-dimensional spacetime…

High Energy Physics - Theory · Physics 2009-10-07 G. W. Gibbons , H. Lu , C. N. Pope

We show that various holomorphic quantities in supersymmetric gauge theories can be conveniently computed by configurations of D4-branes and D6-branes. These D-branes intersect along a Riemann surface that is described by a holomorphic…

High Energy Physics - Theory · Physics 2011-07-19 Robbert Dijkgraaf , Lotte Hollands , Piotr Sulkowski , Cumrun Vafa

After reviewing the general structure of supersymmetric intersecting brane world models, we discuss the issue of stringy gauge coupling unification for a natural class of MSSM-like models.

High Energy Physics - Theory · Physics 2007-05-23 Ralph Blumenhagen

We calculate tree level three and four point scattering amplitudes in type II string models with matter fields localized at the intersections of D-brane wrapping cycles. The analysis of the three point amplitude is performed in the context…

High Energy Physics - Theory · Physics 2007-05-23 A. W. Owen

We study the quantum volume of D-branes wrapped around various cycles in Calabi-Yau manifolds, as the manifold's moduli are varied. In particular, we focus on the behaviour of these D-branes near phase transitions between distinct low…

High Energy Physics - Theory · Physics 2009-10-31 Brian R. Greene , C. I. Lazaroiu

We study N=1 supersymmetric four-dimensional solutions of massive Type IIA supergravity with intersecting D6-branes in the presence NS-NS three-form fluxes. We derive N=1 supersymmetry conditions for the D6-brane and flux configurations in…

High Energy Physics - Theory · Physics 2009-09-17 Klaus Behrndt , Mirjam Cvetic

We investigate intersecting D6-branes on an orientifold of type IIA theory in the orbifold background T^6/(Z_4 x Z_2) with the emphasis on finding chiral spectra. RR tadpole cancellation conditions and the scalar potential at disc level are…

High Energy Physics - Theory · Physics 2010-04-05 Gabriele Honecker

From the worldsheet perspective, the superpotential on a D-brane wrapping internal cycles of a Calabi-Yau manifold is given as a generating functional for disk correlation functions. On the other hand, from the geometric point of view,…

High Energy Physics - Theory · Physics 2010-11-23 Marco Baumgartl , Ilka Brunner , Masoud Soroush

We present the intersecting brane configurations consisting of NS-branes, D4-branes(and anti D4-branes) and O6-plane, of type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua in four dimensional N=1 supersymmetric…

High Energy Physics - Theory · Physics 2008-11-26 Changhyun Ahn

Motivated by the M-theory compactification physics, we study a type IIA superstring quiver model with an open string axion field associated with the U(1)_{PQ} Peccei-Quinn global symmetry using D6-brane physics. This realization extends the…

High Energy Physics - Theory · Physics 2017-10-24 Adil Belhaj , Salah-Eddine Ennadifi

We present the intersecting brane configuration of type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua in four dimensional N=1 supersymmetric SU(N_c) gauge theory with a symmetric flavor, a conjugate symmetric…

High Energy Physics - Theory · Physics 2010-10-27 Changhyun Ahn

In this paper we consider the gauge theory living on the world-volume of a stack of N D3-branes of Type 0B/\Omega' I_6(-1)^{F_{L}} and of its orbifolds C^2/Z_2 and C^3/(Z_2 x Z_2). The gauge theories obtained in the three cases are a brane…

High Energy Physics - Theory · Physics 2008-11-26 P. Di Vecchia , A. Liccardo , R. Marotta , F. Pezzella

String and M-theory realizations of brane world supersymmetry breaking scenarios are considered in which visible sector Standard Model fields are confined on a brane, with hidden sector supersymmetry breaking isolated on a distant brane. In…

High Energy Physics - Theory · Physics 2009-11-07 Alexey Anisimov , Michael Dine , Michael Graesser , Scott Thomas

We construct D-brane states on an asymmetric orbifold of type IIA on a four-torus, which is modded out by T-duality. We find explicit boundary states charged under the twisted sector gauge fields. Unlike other cases, the boundary states…

High Energy Physics - Theory · Physics 2010-11-19 Ilka Brunner , Arvind Rajaraman , Moshe Rozali
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