Measurements, errors, and negative kinetic energy
High Energy Physics - Theory
2009-10-22 v1 Condensed Matter
Abstract
An analysis of errors in measurement yields new insight into the penetration of quantum particles into classically forbidden regions. In addition to ``physical" values, realistic measurements yield ``unphysical" values which, we show, can form a consistent pattern. An experiment to isolate a particle in a classically forbidden region obtains negative values for its kinetic energy. These values realize the concept of a {\it weak value}, discussed in previous works.
Keywords
Cite
@article{arxiv.hep-th/9305075,
title = {Measurements, errors, and negative kinetic energy},
author = {Y. Aharonov and S. Popescu and D. Rohrlich and L. Vaidman},
journal= {arXiv preprint arXiv:hep-th/9305075},
year = {2009}
}
Comments
22 pp, TAUP 1850-90