论文标题
复合伪Nambu Goldstone典型
Composite pseudo Nambu Goldstone Quintessence
论文作者
论文摘要
由全球对称性($ g \ rightarrow h $)引起的伪-Nambu Goldstone Boson(PNGB)可能是典型模型最有前途的候选人之一,以解释我们宇宙的后期加速。从复合希格斯情景的动机中,我们研究了与$(n)/ so(n-1)$相关的pngb $通过其与不形成$ g $完整表示的粒子相连的情况。 Coleman Weinberg(CW)电势是通过循环中的外部粒子生成的,该粒子与强烈相互作用的动力学相关,可以基于计算。测试了深色能量(DE)的模型,以针对几个最新的宇宙学观察结果进行测试,例如万神殿的超新星数据,巴里昂声学振荡(BAO),红移空间畸变(RSD)数据等。我们发现,拟合的拟合优先于PNGB场衰减常数的亚平原值。此外,我们发现该模型可以很好地预测宇宙学参数在允许的观察范围内,从而提供了精力促进的精髓模型。
A pseudo-Nambu Goldstone Boson (pNGB) arising from the breaking of a global symmetry ($G\rightarrow H$) can be one of the most promising candidates for the quintessence model, to explain the late-time acceleration of our universe. Motivated from the Composite Higgs scenario, we have investigated the case where the pNGB associated with $SO(N)/ SO(N-1)$ develops a potential through its couplings with the particles that do not form the complete representations of $G$. The Coleman Weinberg (CW) potential is generated via the external particles in the loop which are linked with the strongly interacting dynamics and can be computed predicatively. The model of Dark Energy (DE) is tested against several latest cosmological observations such as supernovae data of Pantheon, Baryon Acoustic Oscillation (BAO), Redshift-space distortion (RSD) data, etc. We have found that the fit prefers the sub-Planckian value of the pNGB field decay constant. Moreover, we have found that the model predicts cosmological parameters well within the allowed range of the observation and thus gives a well-motivated model of quintessence.