Freeze-in 是非热平衡,由于DM和SM粒子作用非常小,例如feebly interacting massive particle (FIMP), DM不处于平衡且密度非常小(∼0),早期T很大时DM produce的反应会受到很大 suppress (,σ∼1/s,Γ<<H)。 Freeze-in 可发生在两个区域 UV or IR-dominated. IR-domi
这篇文章主要是提出了暖暴胀中通过 freeze-in 过程产生暗物质的计算方法。他们发现暗物质的产量强烈依赖于相互作用算符的量纲。如果量纲足够大,那么暗物质可以暴胀结束之前全部产生,并且产量比同等情况下的普通暴胀+重加热的 freeze-in 过程多很多数量级。接下来我分成四个部分详细介绍一下。 一、暖暴胀 我们知道,在...
We study production of scalar dark matter via the freeze--in mechanism in the relativistic regime, focussing on the simplest Higgs portal model. We derive the corresponding relativistic reaction rates based on the Bose--Einstein statistics taking into account the thermal mass effects as well as ...
“freeze in memory”别理解成“冻结记忆”大家好，欢迎来的饼哥英语口语的频道，今天我们分享一个非常有用且地道的口语表达——freeze in memory, 这个短语的含义不是指“冻结记忆”，其正确的含义是：freeze in memory 保留在记忆中 I could never forget what it felt like to hold my baby for the first...
沪江词库精选freeze-in impurity是什么意思、英语单词推荐 凝入杂质 相似短语 freeze in impurity 凝入杂质 freeze in 用冰冻上 applied impurity 羊毛外加杂质 atmospheric impurity 大气污染物 background impurity 本底杂质 inimical impurity 有害杂质 impurity absorption 杂质吸收 impurity content 杂质...
When the magician pulled the rabbit out of his hat, the audience froze in amazement. 当魔术师把兔子从他的帽子里变出来时，观众惊讶地呆住了。(froze是freeze的过去式和过去分词)
The meaning of STOP/FREEZE IN ONE'S TRACKS is to stop doing something suddenly or immediately. How to use stop/freeze in one's tracks in a sentence.
为您解答 freeze in horror是惊恐的无法动弹，freeze是不动，僵了 burn with shame指脸臊得火辣辣的，或心里恼羞成怒地煎熬 翻译得不是很到位。惊慌
网络凝入杂质 网络释义 1. 凝入杂质 混入杂质,mechanical... ... ) implanted impurity 注入杂质 )freeze-in impurity凝入杂质) mechanical impurities 混入杂质 ... www.dictall.com|基于2个网页
production Andrzej Hryczuk and Maxim Laletin National Centre for Nuclear Research, Pasteura 7, 02-093 Warsaw, Poland E-mail: andrzej.hryczuk@ncbj.gov.pl, maxim.laletin@ncbj.gov.pl Abstract: We study a novel dark matter production mechanism based on the freeze-in through semi-production, ...