ar X iv : h ep - t h / 07 01 20 4 v 1 2 2 Ja n 20 07 hep - th / 0701204 UPR - 1167 - T Twisting K 3 × T 2 Orbifolds

نویسندگان

  • Mirjam Cvetič
  • Tao Liu
  • Michael B. Schulz
چکیده

We construct a class of geometric twists for Calabi-Yau manifolds of Voisin-Borcea type (K3 × T )/Z2 and study the superpotential in a type IIA orientifold based on this geometry. The twists modify the direct product by fibering the K3 over T 2 while preserving the Z2 involution. As an important application, the Voisin-Borcea class contains T /(Z2 × Z2), the usual setting for intersecting D6 brane model building. Past work in this context considered only those twists inherited from T , but our work extends these twists to a subset of the blow-up modes. Our work naturally generalizes to arbitrary K3 fibered Calabi-Yau manifolds and to nongeometric constructions.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

ar X iv : h ep - t h / 01 12 11 4 v 2 2 1 Ja n 20 02 CCNY - HEP - 01 / 10 Gravitational fields on a noncommutative space

Noncommutative three-dimensional gravity can be described in terms of a noncommuta-tive Chern-Simons theory. We extend this structure and also propose an action for gravi-tational fields on an even dimensional noncommutative space. The action is worked out in some detail for fields on a noncommutative CP 2 and on S 4 .

متن کامل

ar X iv : h ep - t h / 97 01 16 2 v 1 2 8 Ja n 19 97 hep - th / 9701162 , IASSNS - HEP - 97 - 3 VECTOR BUNDLES AND F THEORY

To understand in detail duality between heterotic string and F theory compactifications, it is important to understand the construction of holomorphic G bundles over elliptic Calabi-Yau manifolds, for various groups G. In this paper, we develop techniques to describe these bundles, and make several detailed comparisons between the heterotic string and F theory.

متن کامل

ar X iv : h ep - t h / 99 01 13 9 v 1 2 7 Ja n 19 99 hep - th / 9901139 SU - ITP - 9901 January 1999 Conformal Mechanics and the Virasoro Algebra

We demonstrate that any scale-invariant mechanics of one variable exhibits not only 0+1 conformal symmetry, but also the symmetries of a full Virasoro algebra. We discuss the implications for the adS/CFT correspondence.

متن کامل

ar X iv : h ep - p h / 05 01 25 4 v 1 2 7 Ja n 20 05 UT - 05 - 01 Strongly Coupled Gauge Mediation

A model of gauge mediation with m 3/2 ≃ O(1) eV is considered to motivate 100 TeV colliders. Massive mediators with standard-model and supersymmetry-breaking gauge quantum numbers let low-scale dynamics induce sizable soft masses of the standard-model superpartners. We circumvent potential phenomenological difficulties that such low-scale models tend to cause.

متن کامل

ar X iv : h ep - t h / 01 03 00 5 v 2 2 2 M ar 2 00 1 1 Kähler geometry and SUSY mechanics

We present two examples of SUSY mechanics related with Kähler geometry. The first system is the N = 4 supersymmetric one-dimensional sigma-model proposed in hep-th/0101065. Another system is the N = 2 SUSY mechanics whose phase space is the external algebra of an arbitrary Kähler manifold. The relation of these models with antisymplectic geometry is discussed.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009