文章论述了意大利阿布都沙拉木国际理论物理中心(The Abdus Salam International Center for Theoretical Physics,简称为ICTP)的diploma program(文凭项目)对发展中国家优秀年轻学者提供了进一步学习深造的机会,给予发展中国家教育援助...文章论述了意大利阿布都沙拉木国际理论物理中心(The Abdus Salam International Center for Theoretical Physics,简称为ICTP)的diploma program(文凭项目)对发展中国家优秀年轻学者提供了进一步学习深造的机会,给予发展中国家教育援助,提升科学研究能力,促进国家教育事业发展等作用。展开更多
We discuss the relic abundance of asymmetric Dark Matter particles in modified cosmological scenarios where the Hubble rate is changed with respect to the standard cosmological scenario. The modified Hubble rate leave...We discuss the relic abundance of asymmetric Dark Matter particles in modified cosmological scenarios where the Hubble rate is changed with respect to the standard cosmological scenario. The modified Hubble rate leaves its imprint on the relic abundance of asymmetric Dark Matter particles if the asymmetric Dark Matter particles freeze–out in this era. For generality we parameterize the modification of the Hubble rate and then calculate the relic abundance of asymmetric Dark Matter particles and anti–particles. We find the abundances for the Dark Matter particles and anti–particles are enhanced in the modified cosmological models. The indirect detection signal is possible for the asymmetric Dark Matter particles due to the increased annihilation rate in the modified cosmological models. Applying Planck data,we find the constraints on the parameters of the modified cosmological models.展开更多
文摘文章论述了意大利阿布都沙拉木国际理论物理中心(The Abdus Salam International Center for Theoretical Physics,简称为ICTP)的diploma program(文凭项目)对发展中国家优秀年轻学者提供了进一步学习深造的机会,给予发展中国家教育援助,提升科学研究能力,促进国家教育事业发展等作用。
基金Supported by the National Natural Science Foundation of China under Grant Nos.11365022 and 11765021
文摘We discuss the relic abundance of asymmetric Dark Matter particles in modified cosmological scenarios where the Hubble rate is changed with respect to the standard cosmological scenario. The modified Hubble rate leaves its imprint on the relic abundance of asymmetric Dark Matter particles if the asymmetric Dark Matter particles freeze–out in this era. For generality we parameterize the modification of the Hubble rate and then calculate the relic abundance of asymmetric Dark Matter particles and anti–particles. We find the abundances for the Dark Matter particles and anti–particles are enhanced in the modified cosmological models. The indirect detection signal is possible for the asymmetric Dark Matter particles due to the increased annihilation rate in the modified cosmological models. Applying Planck data,we find the constraints on the parameters of the modified cosmological models.
