2 papers
quant-ph2026
The Min-Rains Relative Entropy Is Not Tight for Exact PPT Entanglement Distillation
Chengkai Zhu, Xin Wang
Exact entanglement distillation converts a noisy bipartite state into a maximally entangled state with zero error. Under completely PPT-preserving operations, the additive min-Rain…
q-fin.PM2026
From Binary Screens to Continuous Compliance: A Shariah Screening Measure for Portfolio Design
Abdulrahman Qadi, Akash Sharma, Francesca Medda
Islamic equity screening relies on multiple binary rulebooks that often classify the same firm differently. This paper develops a Continuous Shariah Compliance Index (CSCI) on $[0,…