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I will review briefly how inflation is expected to generate a stochastic background of primordial gravitational waves (GWs). Then, I will discuss how such GWs can be enhanced by a stiff period following inflation, enough to be observable. I will present examples of this in the context of hybrid inflation with \(\alpha \) -attractors, or a period of hyperkination in Palatini gravity.

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Observable Primordial Gravitational Waves from Cosmic Inflation

  • 会议论文

  • 发表日期：

    2025年

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  • Konstantinos Dimopoulos

摘要

I will review briefly how inflation is expected to generate a stochastic background of primordial gravitational waves (GWs). Then, I will discuss how such GWs can be enhanced by a stiff period following inflation, enough to be observable. I will present examples of this in the context of hybrid inflation with \(\alpha \) -attractors, or a period of hyperkination in Palatini gravity.