Time-dependent diffusive interactions between dark matter and dark energy in the context of k-essence cosmology

作     者：Abhijit Bandyopadhyay Anirban Chatterjee Abhijit Bandyopadhyay;Anirban Chatterjee

作者机构：Department of PhysicsRamakrishna Mission Vivekananda Educational and Research InstituteBelur MathHowrah 711202India 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2021年第21卷第1期

页      面：15-24页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0704[理学-天文学] 0825[工学-航空宇航科学与技术] 

基　　金：University Grants Commission(UGC) India for supporting this work by means of NET Fellowship(Ref.No.22/06/2014(i)EU-V and Sr.No.2061451168)。 

主　　题：Dark Energy Dark Matter k-essence 

摘      要：We investigated the scenario of time-dependent diffusive interaction between dark matter and dark energy and showed that such a model can be accommodated within the observations of luminosity distanceredshift data in Supernova la(SN la)observations.We obtain constraints on different relevant parameters of this model from the observational data.We consider a homogeneous scalar field(t)driven by a k-essence Lagrangian of the form L=V(φ)F(X)with constant potential V(φ)=V,to describe the dynamics of dark energy in this model.Using the temporal behaviour of the FRW scale factor,the equation of state and total energy density of the dark fluid,extracted from the analysis of SN la(JLA)data,we have obtained the time-dependence of the k-essence scalar field and also reconstructed the form of the function F(X)in the k-essence Lagrangian.