Abstract
Calculations of the quantum information entropy have been extended to a non-analytically solvable situation. Specifically, we have investigated the information entropy for a one-dimensional system with a schematic "Landau" potential in a numerical way. Particularly, it is found that the phase transitional behavior of the system can be well expressed by the evolution of quantum information entropy. The calculated results also indicate that the position entropy Sx and the momentum entropy Sp at the critical point of phase transition may vary with the mass parameter M but their sum remains as a constant independent of M for a given excited state. In addition, the entropy uncertainty relation is proven to be robust during the whole process of the phase transition.
Original language | English |
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Article number | 050302 |
Journal | Chinese Physics B |
Volume | 25 |
Issue number | 5 |
DOIs | |
State | Published - May 2016 |
Keywords
- entropy uncertainty relation
- quantum information entropy
- quantum phase transition