dorsal/arxiv
View SchemaMeasurement of the total energy of an isolated system by an internal observer
| Authors | S. Massar, S. Popescu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0412079 |
| URL | https://arxiv.org/abs/quant-ph/0412079 |
| DOI | 10.1103/PhysRevA.71.042106 |
| Journal | Phys. Rev. A 71, 042106 (2005) |
Abstract
We consider the situation in which an observer internal to an isolated system wants to measure the total energy of the isolated system (this includes his own energy, that of the measuring device and clocks used, etc...). We show that he can do this in an arbitrarily short time, as measured by his own clock. This measurement is not subjected to a time-energy uncertainty relation. The properties of such measurements are discussed in detail with particular emphasis on the relation between the duration of the measurement as measured by internal clocks versus external clocks.
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"abstract": "We consider the situation in which an observer internal to an isolated system\nwants to measure the total energy of the isolated system (this includes his own\nenergy, that of the measuring device and clocks used, etc...). We show that he\ncan do this in an arbitrarily short time, as measured by his own clock. This\nmeasurement is not subjected to a time-energy uncertainty relation. The\nproperties of such measurements are discussed in detail with particular\nemphasis on the relation between the duration of the measurement as measured by\ninternal clocks versus external clocks.",
"arxiv_id": "quant-ph/0412079",
"authors": [
"S. Massar",
"S. Popescu"
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"doi": "10.1103/PhysRevA.71.042106",
"journal_ref": "Phys. Rev. A 71, 042106 (2005)",
"title": "Measurement of the total energy of an isolated system by an internal observer",
"url": "https://arxiv.org/abs/quant-ph/0412079"
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