TY - JOUR
T1 - Metamorphosis of Goldstone and soft fluctuation modes in polariton lasers
AU - Binder, R.
AU - Kwong, N. H.
N1 - Funding Information:
We gratefully acknowledge financial support from the U.S. National Science Foundation (NSF) under Grant No. DMR 1839570, and CPU time at HPC, University of Arizona.
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/2/8
Y1 - 2021/2/8
N2 - For a driven-dissipative quantum many-body system prepared in a spontaneous broken-symmetry steady state, in addition to the Goldstone mode, the soft fluctuation modes provide important insight into the system's dynamics. Using a microscopic polariton laser theory, we find a rich transformation behavior of discrete and continuum soft modes in a two parameter (pump density and cavity dissipation rate) space. Our theory yields a unified picture of a variety of seemingly disconnected physical concepts including Mott transition, Mollow spectra or relaxation oscillations, polaritonic Bardeen-Cooper-Schrieffer gaps, and Goldstone companion modes. In particular, transformation paths connect the Goldstone companion modes with the Mollow analog modes across a line of exceptional points.
AB - For a driven-dissipative quantum many-body system prepared in a spontaneous broken-symmetry steady state, in addition to the Goldstone mode, the soft fluctuation modes provide important insight into the system's dynamics. Using a microscopic polariton laser theory, we find a rich transformation behavior of discrete and continuum soft modes in a two parameter (pump density and cavity dissipation rate) space. Our theory yields a unified picture of a variety of seemingly disconnected physical concepts including Mott transition, Mollow spectra or relaxation oscillations, polaritonic Bardeen-Cooper-Schrieffer gaps, and Goldstone companion modes. In particular, transformation paths connect the Goldstone companion modes with the Mollow analog modes across a line of exceptional points.
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U2 - 10.1103/PhysRevB.103.085304
DO - 10.1103/PhysRevB.103.085304
M3 - Article
AN - SCOPUS:85101945054
VL - 103
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 8
M1 - 085304
ER -