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Wigner Function Analysis of Finite Matter-Radiation Systems
by E. Nahmad-Achar, R. López-Peña, S. Cordero, and O. Castaños
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Eduardo Nahmad-Achar |
| Submission information | |
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| Preprint Link: | scipost_202210_00046v2 (pdf) |
| Date accepted: | 2023-08-11 |
| Date submitted: | 2023-02-09 20:05 |
| Submitted by: | Nahmad-Achar, Eduardo |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 34th International Colloquium on Group Theoretical Methods in Physics (GROUP2022) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
We show that the behaviour in phase space of the Wigner function associated to the electromagnetic modes carries the information of both, the entanglement properties between matter and field, and the regions in parameter space where quantum phase transitions take place. A finer classification for the continuous phase transitions is obtained through the computation of the surface of minimum fidelity.
Author comments upon resubmission
We thank both reviewers for their careful review and assertive comments.
List of changes
Report:
1) x_jk has been explicitly described both, in the caption of Figure 2, and in the text in the beginning of Section 3.
2) k_i has been explained more carefully, as well as the truncation criterion and the calculation of the fidelity between states.
3) The caption of Figure 4 has been expanded for greater clarity.
Comment:
1) Title of Subsection 2.2 has been changed to “Numerical Quantum Solution”.
2) References have been added for the use of the fidelity criterion in determining quantum phase transitions.
3) A well defined criterion is now given at the end of p.4.
4) The equations on (previous) line 113 have been eliminated.
Others:
Three new references were added.
Published as SciPost Phys. Proc. 14, 039 (2023)