Thermal Background Can Solve the Cosmological Moduli Problem

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

Thermal background can solve the cosmological moduli problem.

It is shown that the coherent field oscillation of moduli fields with weak or TeV scale masses can dissipate its energy efficiently if they have a derivative coupling to standard bosonic fields in a thermal state. This mechanism provides a new solution to the cosmological moduli problem without creating too much entropy at late time.

متن کامل

Cosmological Moduli Problem and Thermal Inflation Models

In superstring theories, there exist various dilaton and modulus fields which masses are expected to be of the order of the gravitino mass m3/2. These fields lead to serious cosmological difficulties, so called “cosmological moduli problem”, because a large number of moduli particles are produced as the coherent oscillations after the primordial inflation. We make a comprehensive study whether ...

متن کامل

Can codimension - two branes solve the cosmological constant problem ?

It has been suggested that codimension-two braneworlds might naturally explain the vanishing of the 4D effective cosmological constant, due to the automatic relation between the deficit angle and the brane tension. To investigate whether this cancellation happens dynamically, and within the context of a realistic cosmology, we study a codimension-two braneworld with spherical extra dimensions c...

متن کامل

Relaxing the cosmological moduli problem.

Typically the moduli fields acquire mass mφ = ±C H in the early universe, which shifts the position of the minimum of their effective potential and leads to an excessively large energy density of the oscillating moduli fields at the later stages of the evolution of the universe. This constitutes the cosmological moduli problem, or Polonyi field problem. We show that the cosmological moduli prob...

متن کامل

The cosmological moduli problem and preheating

Many models of supersymmetry breaking, in the context of either supergravity or superstring theories, predict the presence of particles with Planck-suppressed couplings and masses around the weak scale. These particles are generically called moduli. The excessive production of moduli in the early Universe jeopardizes the successful predictions of nucleosynthesis. In this paper we show that the ...

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: Physical Review Letters

سال: 2006

ISSN: 0031-9007,1079-7114

DOI: 10.1103/physrevlett.96.171301