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arXiv 2409.09999hep-th
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非微扰方法用于Higgs-R²膨胀中标量粒子的产生

Non-perturbative approach for scalar particle production in Higgs-$R^2$ inflation

Flavio Pineda, Luis O. Pimentel

AI总结:

该研究采用非微扰方法,在Higgs-R²膨胀模型中探讨了标量粒子的产生机制,发现轻粒子在共形耦合下及特定质量条件下存在粒子产生。

摘要:

我们研究了在Higgs-R²膨胀模型中非微扰标量粒子的产生,重点在于一个具有非最小耦合到Ricci标量R的重观察者场。通过将模型转换到爱因斯坦框架中,其中直接耦合在膨胀动力学和观察者场之间出现,我们分析了微扰和非微扰粒子产生。我们通过Bogolyubov变换数值求解观察者场方程,以计算共动粒子密度。我们的发现表明,轻粒子在共形耦合下以及在最小耦合情况下质量m_χ> M/2时会发生粒子产生。

英文摘要:

We investigate the non-perturbative production of scalar particles within the Higgs-$R^2$ inflation model, focusing on a massive spectator field that interacts gravitationally via a non-minimal coupling to the Ricci scalar $R$. By transforming the model to the Einstein frame, where direct couplings between inflationary dynamics and the spectator field emerge, we analyze both perturbative and non-perturbative particle production. We solve the spectator field equation numerically, using the Bogolyubov transformation, to calculate the comoving particle density. Our findings indicate that particle production occurs for light particles with conformal coupling and for masses $m_χ> M/2$ in the minimally coupled scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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