String threshold corrections from field theory

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود 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

String Threshold corrections from Field Theory

A field theory approach to summing threshold effects to the gauge couplings in a two-torus compactification is presented and the link with the (heterotic) string calculation is carefully investigated. We analyse whether the complete UV behaviour of the theory may be described on pure field theory grounds, as due to momentum modes only. “Non-decoupling” effects of a small dimension are discussed...

متن کامل

String corrections to gauge couplings from a field theory approach

An effective field theory approach is introduced to compute one-loop radiative corrections to the gauge couplings due to Kaluza-Klein states associated with a two torus compactification. The results are compared with those of the string in the field theory " limit " α ′ → 0. The whole U and the leading T moduli dependence of the gauge dependent part of the string corrections to gauge couplings ...

متن کامل

String Unification and Threshold Corrections

The interpretation of the apparent unification of gauge couplings within supersymmetric theories depends on uncertainties induced through heavy particle thresholds. While in standard grand unified theories these effects can be estimated easily, the corresponding calculations are quite complicated in string unified theories and do exist only in models with unbroken E6. We present results for hea...

متن کامل

Mass corrections in string theory and lattice field theory

Kaluza-Klein compactifications of higher dimensional Yang–Mills theories contain a number of four dimensional scalars corresponding to the internal components of the gauge field. While at tree-level the scalar zero modes are massless, it is well known that quantum corrections make them massive. We compute these radiative corrections at 1–loop in an effective field theory framework, using the ba...

متن کامل

Noncommutative Geometry from String Theory: Annulus Corrections

We develop a method in which it is possible to calculate one loop corrections to the noncommutativity parameter found for open strings in a background Fμν field. We first reproduce the well known disk results for θ μν . We then consider the case of charged and neutral open strings on the brane, and show in both cases that the result is the same as in the disk case, apart from a multiplicative f...

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: Nuclear Physics B

سال: 2002

ISSN: 0550-3213

DOI: 10.1016/s0550-3213(02)00625-9