Negative Kinetic Energy Between Past and Future State Vectors
Condensed Matter
2009-10-22 v1 Quantum Physics
Abstract
An analysis of errors in measurement yields new insight into classically forbidden quantum processes. In addition to "physical" values, a realistic measurement can yield "unphysical" values; we show that in {\it sequences} of measurements, the "unphysical" values can form a consistent pattern. An experiment to isolate a particle in a classically forbidden region obtains a negative value for its kinetic energy. It is the {\it weak value} of kinetic energy between past and future state vectors.
Keywords
Cite
@article{arxiv.cond-mat/9406116,
title = {Negative Kinetic Energy Between Past and Future State Vectors},
author = {Daniel Rohrlich and Yakir Aharonov and Sandu Popescu and Lev Vaidman},
journal= {arXiv preprint arXiv:cond-mat/9406116},
year = {2009}
}
Comments
Talk presented at the Conference on Fundamental Problems in Quantum Theory, Baltimore, MD, June 1994, 10 pp, plain TeX