title: Existence of time-dependent density-functional theory for open electronic systems: time-dependent holographic electron density theorem.
abstract: We present the time-dependent holographic electron density theorem (TD-HEDT), which lays the foundation of time-dependent density-functional theory (TDDFT) for open electronic systems. For any finite electronic system, the TD-HEDT formally establishes a one-to-one correspondence between the electron density inside any finite subsystem and the time-dependent external potential. As a result, any electronic property of an open system in principle can be determined uniquely by the electron density function inside the open region. Implications of the TD-HEDT on the practicality of TDDFT are also discussed.
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, China. xz58@ustc.edu.cn
authors.forename: Xiao
authors.initials: X
authors.lastname: Zheng
authors.forename: ChiYung
authors.initials: C
authors.lastname: Yam
authors.forename: Fan
authors.initials: F
authors.lastname: Wang
authors.forename: GuanHua
authors.initials: G
authors.lastname: Chen