By adopting a divide-and-conquer strategy, subsystem-DFT (sDFT) can dramatically reduce the computational cost of large-scale electronic structure calculations. The key ingredients sDFT are nonadditive kinetic energy and exchange-correlation functionals which dominate it's accuracy. Even though, semilocal find broad range applications, their accuracy is somewhat limited especially for those sys...

A bstract We study the temporal evolution of circuit complexity for a subsystem in harmonic lattices after global quantum quench mass parameter, choosing initial reduced density matrix as reference state. Upper and lower bounds are derived entire system. The is evaluated by employing Fisher information geometry covariance matrices. discuss numerical results evolutions block consecutive sites ch...

The subject under study is an open subsystem of a larger linear and conservative system and the way in which it is coupled to the rest of system. Examples are a model of crystalline solid as a lattice of coupled oscillators with a finite piece constituting the subsystem, and an open system such as the Helmholtz resonator as a subsystem of a larger conservative oscillatory system. Taking the vie...

E-learning has become an important tool for learners to acquire information and knowledge. However visually impaired people have no or very little access to this tool, since interface suitable to them are unavailable. The Voice Activated E learning System can provide a solution to this problem. Developing this system is meant to assist visually impaired students in learning, a desired subject, ...