dorsal/arxiv
View SchemaPotential Barrier Classification by Short-Time Measurement
| Authors | Er'el Granot, Avi Marchewka |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0601069 |
| URL | https://arxiv.org/abs/quant-ph/0601069 |
| DOI | 10.1103/PhysRevA.73.032111 |
Abstract
We investigate the short-time dynamics of a delta-function potential barrier on an initially confined wave-packet. There are mainly two conclusions: A) At short times the probability density of the first particles that passed through the barrier is unaffected by it. B) When the barrier is absorptive (i.e., its potential is imaginary) it affects the transmitted wave function at shorter times than a real potential barrier. Therefore, it is possible to distinguish between an imaginary and a real potential barrier by measuring its effect at short times only on the transmitting wavefunction.
{
"annotation_id": "99fba944-6af1-4305-9070-bf94542ee2ae",
"date_created": "2026-03-02T18:02:23.420000Z",
"date_modified": "2026-03-02T18:02:23.420000Z",
"file_hash": "ebd2c5e57fca6c637b116effd6aba10070dad3f65474fd9c49f42fb5fe90d03a",
"private": false,
"record": {
"abstract": "We investigate the short-time dynamics of a delta-function potential barrier\non an initially confined wave-packet. There are mainly two conclusions: A) At\nshort times the probability density of the first particles that passed through\nthe barrier is unaffected by it. B) When the barrier is absorptive (i.e., its\npotential is imaginary) it affects the transmitted wave function at shorter\ntimes than a real potential barrier. Therefore, it is possible to distinguish\nbetween an imaginary and a real potential barrier by measuring its effect at\nshort times only on the transmitting wavefunction.",
"arxiv_id": "quant-ph/0601069",
"authors": [
"Er\u0027el Granot",
"Avi Marchewka"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.73.032111",
"title": "Potential Barrier Classification by Short-Time Measurement",
"url": "https://arxiv.org/abs/quant-ph/0601069"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "0b9d81ba-7007-4528-850e-4a89d5bfe770",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}