String thresholds and renormalization group evolution

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 thresholds and Renormalisation Group Evolution

We consider the calculation of threshold effects due to Kaluza Klein and winding modes in string theory. We show that for a large radius of compactification these effects may be approximated by an effective field theory applicable below the string cut-off scale. Using this formalism we show that the radiative contribution to gauge couplings involving only massive Kaluza Klein and winding modes ...

متن کامل

Renormalization Group and String Amplitudes*

We define p-functions for open string tachyons away from the perturbative fixed point. We show that solutions of the renormalization group fixed point equations generate open string scattering amplitudes. Submitted to Physics Letters I3 * Work supported by the Department of Energy, contract DE AC03 76SF00515. + Work supported by NSF PHY 812280 One of the most interesting topics of recent resear...

متن کامل

Renormalization group flow of reduced string actions

It has been argued that certain reduced actions play a role in AdS/CFT when comparing fast moving strings to long single trace operators in gauge theories. Such actions arise in two ways: as a limit of the string action and as a description of long single trace field theory operators. They are non-relativistic sigma models with the target space usually being a Kähler manifold. They are non-reno...

متن کامل

Low Energy Thresholds and the Renormalization Group in the MSSM

We derive the 1-loop Renormalization Group Equations for the parameters of the Minimal Supersymmetric Standard Model (MSSM) taking into account the successive decoupling of each sparticle below its threshold. This is realized by a step function at the level of each graph contributing to the Renormalization Group Equations. Dedicated to the memory of Spyros Vlassopulos , colleague and friend IOA...

متن کامل

Renormalization-group flows and charge transmutation in string theory

We analyze the behaviour of heterotic squashed-Wess–Zumino–Witten backgrounds under renormalization-group flow. The flows we consider are driven by perturbation creating extra gauge fluxes. We show how the conformal point acts as an attractor from both the target-space and world-sheet points of view. We also address the question of instabilities created by the presence of closed time-like curve...

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: 2000

ISSN: 0550-3213

DOI: 10.1016/s0550-3213(99)00770-1