Abstract Details
| Name: SATADAL DATTA Affiliation: Senior Research Fellow Conference ID: ASI2018_1268 Title : Analogue tachyon in Jeans Cloud Authors and Co-Authors : no-coauthor, only me and Harish-Chandra research Institute, Chhatnag Road, Jhunsi, Allahabad-211019, INDIA Abstract Type : Poster Abstract Category : General Relativity and Cosmology Abstract : We study the linear perturbations in a stable Jeans cloud, i.e; the dimension of the cloud is less than the Jeans length. We find that the linear perturbation of density in such a system obeys a wave equation in acoustic analogue of Minkowski space-time which is similar to Klein-Gordon equation for tachyon field in Minkowski space-time, i.e; Klein-Gordon equation with negative mass-squared term in a flat space time background. We further find the analogy with tachyon field for linear perturbation of density by studying linear perturbations in a stable cloud made of Bose-Einstein condensate as dark matter. |