On the Quantum Origin of Structure in the Inflationary Universe

نویسنده

  • Daniel Baumann
چکیده

In this lecture I give a pedagogical introduction to inflationary cosmology with a special focus on the quantum generation of cosmological perturbations. The basic outline of the lecture is as follows: The lecture was first presented to astronomy undergraduate students at Princeton in 2005.

برای دانلود رایگان 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

N ov 1 99 6 Can Doppler Peaks discriminate among Inflationary models and Topological Defect scenarios ?

Doppler peaks in the cosmic microwave background may allow us to distinguish among the two classes of theories—inflationary models and topological defect scenarios—which attempt to explain the origin of structure formation in the universe. We consider density perturbations seeded by global textures in a universe dominated by cold dark matter. We calculate the height and the position of the prim...

متن کامل

Inflation and the Theory of Cosmological Perturbations

The hypothesis that the Universe underwent a period of exponential expansion at very early times has become the most popular theory of the early Universe. Not only does it solve some of the problems of standard big bang cosmology, but it also provides a causal theory for the origin of primordial density fluctuations which may explain the observed density inhomogeneities and cosmic microwave flu...

متن کامل

INFLATION AFTER COBE Lectures on Inflationary Cosmology∗

In these lectures I review the standard hot big-bang cosmology, emphasizing its successes, its shortcomings, and its major challenge—a detailed understanding of the formation of structure in the Universe. I then discuss the motivations for—and the fundamentals of—inflationary cosmology, particularly emphasizing the quantum origin of metric (density and gravity-wave) perturbations. Inflation add...

متن کامل

Inflation from Quantum Gravity

In recent years cosmologists are repeatedly invoking quantum fluctuations to "explain" the origin of the universe [1 ]. We discuss here one such model in which our observed universe originates from a primordial "Planck size bubble" through inflation. The final state of the universe will have zero cosmological constant and zero spatial curvature with overwhelming probability. The analysis is bas...

متن کامل

میدانهای مغناطیسی بزرگ مقیاس و جفت‌شدگیهای الکترو- دیلاتونی و خمش

 We investigate the generation of large scale magnetic fields in the universe from quantum fluctuations that are produced in the inflationary stage. By coupling these quantum fluctuations to the dilaton field and Ricci scalar, we show that the magnetic fields with the strength observed today can be produced. We consider two situations. First, the evolution of dilaton ends by starting the reheat...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007