AN EXPONENTIALLY SMALL μ-TERM IN STRING THEORY

نویسندگان

چکیده

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

DEVELOPMENT IN STRING THEORY

The string theory is a fast moving subject, both physics wise and in the respect of mathematics. In order to keep up with the discipline it is important to move with new ideas which are being stressed. Here I wish to give extracts from new papers of ideas which I have recently found interesting. There are six papers which are involved: I ."Strings formulated directly in 4 dimensions " A. N...

متن کامل

Small Instantons in String Theory

A long-standing puzzle about the heterotic string has been what happens when an instanton shrinks to zero size. It is argued here that the answer at the quantum level is that an extra SU(2) gauge symmetry appears that is supported in the core of the instanton. Thus in particular the quantum heterotic string has vacua with higher rank than is possible in conformal field theory. When k instantons...

متن کامل

Exponentially Small Couplings between Twisted Fields of Orbifold String Theories

We investigate the natural occurrence of exponentially small couplings in effective field theories deduced from higher dimensional models. We calculate the coupling between twisted fields of the Z3 Abelian orbifold compactification of the heterotic string. Due to the propagation of massive Kaluza-Klein modes between the fixed points of the orbifold, the massless twisted fields located at these ...

متن کامل

Probing μ-term Generation Mechanism in String Models

We give a generic method to select a realistic μ-term generation mechanism based on the radiative electroweak symmetry breaking scenario and study which type is hopeful within the framework of string theory. We discuss effects of the moduli F -term condensation and D-term contribution to soft scalar masses. e-mail: [email protected] e-mail: [email protected] e-mail: watanabe@a...

متن کامل

Large-Small Equivalence in String Theory

The simplest toroidally compactified string theories exhibit a duality between small and large radii: compactification on a circle, for example, is invariant under R → 1/(2R). Compactification on more general Lorentzian lattices (e.g. toroidal compactification in the presence of background metric, antisymmetric tensor, and gauge fields) yields theories for which a large-small equivalence is not...

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

ژورنال

عنوان ژورنال: Modern Physics Letters A

سال: 2011

ISSN: 0217-7323,1793-6632

DOI: 10.1142/s0217732311034803