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Necessity of negative Wigner function for tunneling
- Source :
- Physical Review A. 102
- Publication Year :
- 2020
- Publisher :
- American Physical Society (APS), 2020.
-
Abstract
- We consider in what sense quantum tunneling is associated with nonclassical probabilistic behavior. We use the Wigner function quasiprobability picture. We give a definition of tunneling that allows us to say whether in a given scenario there is tunneling or not. We prove that this can only happen if the Wigner function is negative and/or a certain measurement operator which we call the tunneling rate operator has a negative Wigner function. We also investigate tunneling in postquantum theories.
- Subjects :
- Physics
Tunneling rate
Condensed Matter::Superconductivity
Operator (physics)
Quantum mechanics
0103 physical sciences
Wigner distribution function
Probabilistic behavior
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
010306 general physics
01 natural sciences
Quantum tunnelling
010305 fluids & plasmas
Subjects
Details
- ISSN :
- 24699934 and 24699926
- Volume :
- 102
- Database :
- OpenAIRE
- Journal :
- Physical Review A
- Accession number :
- edsair.doi...........b7838f2383cbfa71df1a7cc61e5fcc80