Constraining curvatonic reheating
Constraining curvatonic reheating
复制标题
限制曲线再加热
DOI:
10.1088/1475-7516/2016/08/042
复制
发表时间:
2016
影响因子:
6.4
通讯作者:
Hardwick R
中科院分区:
文献类型:
--
作者:
Hardwick R
We derive the first systematic observational constraints on reheating in models of inflation where an additional light scalar field contributes to primordial density perturbations and affects the expansion history during reheating. This encompasses the original curvaton model but also covers a larger class of scenarios. We find that, compared to the single-field case, lower values of the energy density at the end of inflation and of the reheating temperature are preferred when an additional scalar field is introduced. For instance, if inflation is driven by a quartic potential, which is one of the most favoured models when a light scalar field is added, the upper bound T reh< 5× 10 4 GeV on the reheating temperature T reh is derived, and the implications of this value on post-inflationary physics are discussed. The information gained about reheating is also quantified and it is found that it remains modest in plateau inflation (though still larger than in the single-field version of the model) but can become substantial in quartic inflation. The role played by the vev of the additional scalar field at the end of inflation is highlighted, and opens interesting possibilities for exploring stochastic inflation effects that could determine its distribution.
登录
查看更多内容
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
S. Weinberg
通讯作者:
S. Weinberg
影响因子:
5
作者:
D. Langlois;F. Vernizzi
通讯作者:
F. Vernizzi
影响因子:
6.4
作者:
R. Hardwick;C. Byrnes
通讯作者:
C. Byrnes
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
V. Vennin;Jérôme Martin;C. Ringeval
通讯作者:
C. Ringeval
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
E. Dimastrogiovanni;L. Krauss;J. Chluba
通讯作者:
J. Chluba