Thermal gravitational waves in accelerating universe
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...
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Isfahan University of Technology
2013-10-01
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doaj-133fc107d79d4a7481ca98055d782e702020-11-24T23:45:06ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572013-10-011333120Thermal gravitational waves in accelerating universe B Ghayour0 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 amplitude and spectral energy density of the waves in thermal vacuum state is consistent with current accelerating phase of the universe. The enhancement feature of amplitude and spectral energy density of the waves is independent of the expansion model of the universe and hence the thermal effect accounts for it. Therefore, existence of thermal gravitational waves is not ruled outhttp://ijpr.iut.ac.ir/browse.php?a_code=A-10-1039-5&slc_lang=en&sid=1gravitational waves; thermal vacuum state |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
B Ghayour |
spellingShingle |
B Ghayour Thermal gravitational waves in accelerating universe Iranian Journal of Physics Research gravitational waves; thermal vacuum state |
author_facet |
B Ghayour |
author_sort |
B Ghayour |
title |
Thermal gravitational waves in accelerating universe |
title_short |
Thermal gravitational waves in accelerating universe |
title_full |
Thermal gravitational waves in accelerating universe |
title_fullStr |
Thermal gravitational waves in accelerating universe |
title_full_unstemmed |
Thermal gravitational waves in accelerating universe |
title_sort |
thermal gravitational waves in accelerating universe |
publisher |
Isfahan University of Technology |
series |
Iranian Journal of Physics Research |
issn |
1682-6957 |
publishDate |
2013-10-01 |
description |
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 amplitude and spectral energy density of the waves in thermal vacuum state is consistent with current accelerating phase of the universe. The enhancement feature of amplitude and spectral energy density of the waves is independent of the expansion model of the universe and hence the thermal effect accounts for it. Therefore, existence of thermal gravitational waves is not ruled out |
topic |
gravitational waves; thermal vacuum state |
url |
http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1039-5&slc_lang=en&sid=1 |
work_keys_str_mv |
AT bghayour thermalgravitationalwavesinacceleratinguniverse |
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1725497295635480576 |