Generalised Equilibrium Reduced-Density Operator

• Authors: Z. Jacyna-Onyszkiewicz
• Languages of publication: EN

Abstracts

EN

Equilibrium reduced-density operators for subsystems of the universe are derived from the generalised Schrödinger variational principle, additionally assuming that the values of von Neumann entropy for the subsystems are fixed and higher than zero. The obtained reduced-density operator may be useful for description of the properties of an arbitrary system (macroscopic, mesoscopic, nanoscopic, or microscopic) in the equilibrium mixed state.

Keywords

EN

03.65.Ca; 05.30.-d

Discipline

• 03.65.Ca: Formalism
• 05.30.-d: Quantum statistical mechanics(for quantum fluids aspects, see 67.10.Fj)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 5
• Pages: 1231-1240

Dates

published

2018-05

received

2017-09-08

(unknown)

2018-02-19

Contributors

author

Z. Jacyna-Onyszkiewicz

• Quantum Physics Division, Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

Identifiers

DOI

10.12693/APhysPolA.133.1231