论文标题
弦启发上的量子异常运行真空宇宙：通货膨胀和斧头暗物质
Quantum Anomalies in String-Inspired Running Vacuum Universe: Inflation and Axion Dark Matter
论文作者
论文摘要
在这封信中，我们进一步详细介绍了宇宙的宇宙学“跑步效率”类型模型，该模型先前是由作者在弦乐启发的有效理论的背景下提出的，在存在Kalb-ramond（KR）引力轴支球场的情况下，该磁场是由无质量重力弦的无质量弦量降低的。 In the presence of this field, which has anomalous CP violating interactions with the gravitons, primordial gravitational waves induce gravitational anomalies, which in turn are responsible for the appearance of $H^2$ and $H^4$ contributions to the vacuum energy density, these terms being characteristic of generic "running-vacuum-model (RVM) type", where $H$ is the Hubble parameter.在这项工作中，我们详细证明了$ h^4 $项的外观，这是由于重力 - 反纳力诱导的原始宇宙能量密度中的冷凝物，这可以自我一致地诱导通货膨胀，并随后退出，并根据RVM的通用特征退出。我们还主张赞成我们的结果的鲁棒性，这些结果是在有效的低能场理论方法中得出的，反对该理论的超紫罗兰色的完成。在辐射和物质主导的时代期间，重力异常取消，根据量子物质/辐射场理论的一致性而取消。然而，手性和QCD轴型异常生存，对宇宙中的宇宙磁化和轴承暗物质产生重要影响。最后，此处介绍的严格的RVM场景预测了当前宇宙的类似典型的动态暗能，这与此类模型的现有拟合分析兼容了针对观察
In this letter, we elaborate further on a Cosmological "Running-Vacuum" type model for the Universe, suggested previously by the authors within the context of a string-inspired effective theory in the presence of a Kalb-Ramond (KR) gravitational axion field which descends from the antisymmetric tensor of the massless gravitational string multiplet. In the presence of this field, which has anomalous CP violating interactions with the gravitons, primordial gravitational waves induce gravitational anomalies, which in turn are responsible for the appearance of $H^2$ and $H^4$ contributions to the vacuum energy density, these terms being characteristic of generic "running-vacuum-model (RVM) type", where $H$ is the Hubble parameter. In this work we prove in detail the appearance of the $H^4$ terms due to gravitational-anomaly-induced condensates in the energy density of the primordial Universe, which can self-consistently induce inflation, and subsequent exit from it, according to the generic features of RVM. We also argue in favour of the robustness of our results, which were derived within an effective low-energy field theory approach, against Ultra Violet completion of the theory. During the radiation and matter-dominated eras, gravitational anomalies cancel, as required for the consistency of the quantum matter/radiation field theory. However, chiral and QCD-axion-type anomalies survive and have important consequences for both cosmic magnetogenesis and axionic dark matter in the Universe. Finally, the stringy RVM scenario presented here predicts quintessence-like dynamical dark energy for the current Universe, which is compatible with the existing fitting analyses of such model against observations
