3 papers
quant-ph2026
No-Signalling Fixes the Hilbert-Space Inner Product
Arun Kumar Pati
We investigate whether the inner product structure of quantum mechanics can be modified without violating fundamental physical principles. We consider a generalized inner product d…
quant-ph2025
Fractional Contribution of Dynamical and Geometric Phases in Quantum Evolution
Arun Kumar Pati, Vlatko Vedral, Erik Sjoqvist
The fundamental division of the total quantum evolution phase into geometric and dynamical components is a central problem in quantum physics. Here, we prove a remarkably simple an…
quant-ph2003
Quantifying entanglement in "Experimental entanglement of four particles"
A. K. Pati
We quantify various possible entanglement measures for the four particles GHZ entangled state that has been produced experimentally [C. Sackett et al, Nature 404, 256-259 (2000)].