The Overshoot Problem and Giant Structures

نویسنده

  • Nissan Itzhaki
چکیده

Models of small-field inflation often suffer from the overshoot problem. A particularly efficient resolution to the problem was proposed recently in the context of string theory. We show that this resolution predicts the existence of giant spherically symmetric overdense regions with radius of at least 110 Mpc. We argue that if such structures will be found they could offer an experimental window into string theory.

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

The evolution of AGB stars with convective overshoot

The influence of extended convective mixing (overshoot) on asymptotic giant branch stellar evolution is investigated in detail. The extended mixing is treated timedependently, and the efficiency declines exponentially with the geometric distance from the convective boundary. It has been considered at all convective boundaries, including the He-flash convection zone in the intershell region whic...

متن کامل

Overshoot in Giant Stars

The concept of overshoot has already been considered for numerous cases in stellar evolution calculations. We explore the consequences of overshoot at the convection zone which forms during the He-flash (thermal pulse) in AGB stars. We find dramatic changes for the abundances within the intershell region as well as for the mechanism of the 3 dredge-up. That means that both the predicted evoluti...

متن کامل

Control Method of Giant Magnetostrictive Precise Actuator Based on the Preisach Hysteresis Theory

Aiming to the effect of hysteresis characteristics of giant magnetostrictive materials on the giant magnetostrictive actuator, the actuator’s model is divided into four separate segments. Then, based on the Preisach theory, a model which can describe hysteresis characteristics for the actuator is established. Based on this, feedforward is combined with feedback, and a PID closed-loop feedback c...

متن کامل

Voltage - Gated Ion Channels Review and Electrical Excitability

showed that local circuit currents from an excited region Our ability todo gymnastics, to perceive a colorful world, of nerve are needed to bring the next region into activity. and to process language relies on rapid communication This meant that depolarization is the natural stimulus among neurons. Such signaling, the fastest in our bodfor action potential propagation. J. Z. Young (1936) reies...

متن کامل

Giant Cell Tumor of the Sacrum: Series of 19 Patients and Review of the Literature

There are still some debates regarding the best treatment of Giant Cell Tumor (GCT) of the sacrum. Since GCT of this location is rare, therapeutic strategies are mainly based on the treatment of GCT in other anatomic locations. The objective of this study was to evaluate the oncologic and clinical results of surgical management of sacral GCT with and without local adjuvant therapy. Medical reco...

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 2008