Storage and retrieval technique for K-value estimation

textMany chemical processes need large computation time to simulate. It has been observed that the speed of a process simulation depends to a large extent on evaluation of certain important functions in the system to be simulated. One such function is K-value estimation function which involves heavy vapor-liquid equilibrium calculations. Because of large number of K-value calculations, there can be a bottleneck in simulation convergence. Thus within process simulation applications computational speed is often emphasized and accuracy is compromised. In situ adaptive tabulation or ISAT, a storage and retrieval technique is proposed for speeding up K-value estimation in a process simulator (CHEMCAD®) using the input-output data. C language code is developed to implement ISAT algorithm for this application. The C code is then converted into Dynamic link library to be able to be used vii by main CHEMCAD® code as required. The overall testing with different K-value databases gave promising results improving computational time while maintaining accuracy.Electrical and Computer Engineerin

Measurement-Induced Nonlocality in an nn-partite quantum state

We generalize the concept of measurement-induced non-locality (MiN) to $n$-partite quantum states. We get exact analytical expressions for MiN in an $n$-partite pure and $n$-qubit mixed state. We obtain the conditions under which MiN equals geometric quantum discord in an $n$-partite pure state and an $n$-qubit mixed state.Comment: 8 pages, four figures, introduction is modified, summary and comments adde

Invariance of quantum correlations under local channel for a bipartite quantum state

We show that the quantum discord and the measurement induced non-locality (MiN) in a bipartite quantum state is invariant under the action of a local quantum channel if and only if the channel is invertible. In particular, these quantities are invariant under a local unitary channel.Comment: 4 pages, no figures, proof of theorm 2 modifie