IDEAST · Inflation, dark energy and string theory
6РП — Действия „Мария Кюри“
- Период
- 2007-02-01 → 2009-01-31
- Финансиране от ЕС
- 80 000 €
- Участници
- 1
- Схема
- EIF
Линиите свързват координатора с партньорите.
Накратко на български
Космическата инфлация в теорията на струните се анализира чрез търсене на огромни сферични области с висока плътност. Това помага да се разбере защо вселената е успяла да се разшири, въпреки теоретичния проблем с „прескачането“ на подходящата зона за инфлация.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - IDEAST (Inflation, dark energy and string theory)
The project considers the experimental imprints of a certain theoretical problem that appears in realisation of cosmic inflation in string theory. The theoretical problem is that most models of inflation in string theory suffer from the overshoot problem. Namely, the inflation overshoots the region where it can inflate the universe. This is a fundamental problem in inflation. We saw that the most efficient solution to the problem have a cosmological imprint that can be looked for. Namely a giant spherically symmetric over dense regions with radius of about 110 Mpc.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
For decades it was believed that matter and radiation are the most dominant form of energy in the universe and that as a result the universe is decelerating. However, recent experiments show that the universe is actually accelerating and thus it is dominated by an unusual form of energy, known as dark energy.This form of energy induces a repulsive gravitational force which leads to the acceleration of the universe. Understanding dark energy from a particle physics perspective is a long-standing problem, usually referred to as the cosmological constant problem. Even more recently, direct experimental evidence was found for a period of acceleration in the early universe, known as cosmic inflation. While the fact that the universe is currently accelerating came as a surprise, cosmic inflation was in fact predicted about 25 years ago as a resolution to various problems with the standard big-bang model. Moreover, inflation plays a crucial role in providing the seed for the large-scale structure in the universe.This raises the natural question: Is the current cosmic acceleration related to the early universe cosmic inflation? Since the acceleration in the early universe was much faster than it is now, it seems hard to come up with a precise relation between the two periods of accelerations. Very recently I proposed a model that addresses this issue. The model leads to many intriguing predictions that could be studied in experiments in the near future. The main objective of my proposal is to study in detail various aspects of the model and to explore in depth its predictions. In particular I would like to study phenomenological aspects of the model, such as large-scale formation, baryogenesis and its possible relation to neutrinophysics. Another direction that I wish to explore is possible realizations of the model in string theory.
Оригинален текст от CORDIS (на английски).
Участници
- TEL AVIV UNIVERSITY · TEL AVIVКоординаторИзраел
Връзки
Данни: CORDIS, © Европейски съюз