| 词条 | Qubit field theory |
| 释义 |
A qubit field theory is a quantum field theory in which the canonical commutation relations involved in the quantisation of pairs of observables are relaxed. Specifically it is a quantum field theory in which, unlike most other quantum field theories, the pair of observables is not required to always commute.[1] TheoryIn many ordinary quantum field theories, constraining one observable to a fixed value results in the uncertainty of the other observable being infinite (c.f. uncertainty principle), and as a consequence there is potentially an infinite amount of information involved. In the situation of the standard position-momentum commutation (where the uncertainty principle is most commonly cited), this implies that a fixed, finite, volume of space has an infinite capacity to store information. However, Bekenstein's bound hints that the information storage capacity ought to be finite. Qubit field theory seeks to resolve this issue by removing the commutation restriction, allowing the capacity to store information to be finite; hence the name qubit, which derives from quantum-bit or quantised-bit. David Deutsch has presented a group of qubit field theories which, despite not requiring commutation of certain observables, still presents the same observable results as ordinary quantum field theory.[2]J. Hruby has presented a supersymmetric extension.[3] References1. ^{{citebook|title=New Developments in Quantum Cosmology Research|volume=247 of Horizons in world physics|editor-first=Albert|editor-last=Reimer|publisher=Nova Publishers|date=2005|ISBN=1594543216}} 2. ^{{Cite arxiv | eprint=quant-ph/0401024v1 | author1=David Deutsch | title=Qubit Field Theory | year=2004}} 3. ^{{cite arxiv |eprint= quant-ph/0402188 |last1= Hruby |first1= J. |title= Supersymmetry and Qubit Field Theory |year= 2004}} External links
1 : Quantum field theory |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。