...
首页> 外文期刊>Physical review, D >Preheating from target space curvature and unitarity violation: Analysis in field space
【24h】

Preheating from target space curvature and unitarity violation: Analysis in field space

机译:从目标空间曲率和统一违规的预热:现场空间分析

获取原文
           

摘要

We study particle production and unitarity violation caused by a curved target space right after inflation. We use the inflaton field value instead of cosmic time as the time variable, and derive a semiclassical formula for the spectrum of produced particles. We then derive a simple condition for unitarity violation during preheating, which we confirm by our semiclassical method and numerical solution. This condition depends not only on the target space curvature but also on the height of the inflaton potential at the end of inflation. This condition tells us, for instance, that unitarity is violated in running kinetic inflation and Higgs inflation, while unitarity is conserved in α -attractor inflation and Higgs-Palatini inflation.
机译:在通货膨胀后,我们研究由弯曲的目标空间引起的粒子生产和统一性违规。 我们使用inclaton字段值而不是宇宙时间作为时间变量,并导出用于产生颗粒的光谱的半定类公式。 然后我们在预热期间获得了统一性违规的简单条件,我们通过SEMARISCASSICAL方法和数值解决方案确认。 该条件不仅取决于目标空间曲率,而且取决于充气结束时的入口电位的高度。 例如,这种情况告诉我们,在运行动力学通胀和HIGGS通胀中,统一性违反了统一性,而统一性则在α-触觉通胀和HIGGS-Palatini通货膨胀中保存。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号