Annihilation operators associated with unstable vacua in non-equilibrium thermo-field dynamics
Out of thermal equilibrium state, the vacuum is unstable and evolves in time. Consequently, the annihilation operators associated with the unstable vacuum depend on time. This dissipative time-evolution of quantum systems can be systematically treated, within the canonical operator formalism refer...
Saved in:
| Date: | 2008 |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2008
|
| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/119571 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Annihilation operators associated with unstable vacua in non-equilibrium thermo-field dynamics / K. Yoshida, T. Arimitsu // Condensed Matter Physics. — 2008. — Т. 11, № 4(56). — С. 687-697. — Бібліогр.: 15 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Out of thermal equilibrium state, the vacuum is unstable and evolves in time. Consequently, the annihilation
operators associated with the unstable vacuum depend on time. This dissipative time-evolution of quantum
systems can be systematically treated, within the canonical operator formalism referred to as non-equilibrium
thermo-field dynamics. Given is an alternative route to derive the time-dependent annihilation operators within
the formalism. As an example, time-dependent annihilation operators for the systems of bosonic and fermionic
semi-free fields are derived. |
|---|