Evolution of gravitational waves through cosmologicaltransitionsDominik
نویسنده
چکیده
The spectrum of gravitational waves that have been produced in innation is modiied during cosmological transitions. Large drops in the number of relativistic particles, like in the QCD transition or at the e + e ?-annihilation, lead to steps in the energy spectrum of gravitational waves.
منابع مشابه
Evolution of gravitational waves through cosmological transitions
The spectrum of gravitational waves that have been produced in inflation is modified during cosmological transitions. Large drops in the number of relativistic particles, like in the QCD transition or at the ee-annihilation, lead to steps in the energy spectrum of gravitational waves.
متن کاملEvolution of gravitational waves through the cosmological QCD transition
The spectrum of gravitational waves that have been produced in inflation is modified during cosmological transitions. Large drops in the number of relativistic particles, like during the QCD transition or at ee annihilation, lead to steps in the spectrum of gravitational waves. We calculate the transfer function for the differential energy density of gravitational waves for a first-order and fo...
متن کاملامواج گرانشی حرارتی در فاز شتابدار کیهان
Gravitational waves are considered in thermal vacuum state. The amplitude and spectral energy density of gravitational waves are found enhanced in thermal vacuum state compared to its zero temperature counterpart. Therefore, the allowed amount of enhancement depends on the upper bound of WMAP-5 and WMAP-7 for the amplitude and spectral energy density of gravitational waves. The enhancement of ...
متن کاملتصحیحات طیف با پسزمینه دوسیته در فضای کرین
Gravitational waves are the last unconfirmed prediction of the general relativity. These waves are tiny fluctuations in world frame that dessipate energy throghout space. The gravitatinal waves spectra of fluctuations can be originated from the non-linear effects during different cosmic evolution periods, especially from initially non-linear and excited vacuum state in the very early universe. ...
متن کاملA Decision between Bayesian and Frequentist Upper Limit in Analyzing Continuous Gravitational Waves
Given the sensitivity of current ground-based Gravitational Wave (GW) detectors, any continuous-wave signal we can realistically expect will be at a level or below the background noise. Hence, any data analysis of detector data will need to rely on statistical techniques to separate the signal from the noise. While with the current sensitivity of our detectors we do not expect to detect any tru...
متن کاملذخیره 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