3 papers
quant-ph2025
Non-linear sigma models for non-Hermitian random matrices in symmetry classes AI and AII
Anish Kulkarni, Kohei Kawabata, Shinsei Ryu
Symmetry of non-Hermitian matrices underpins many physical phenomena. In particular, chaotic open quantum systems exhibit universal bulk spectral correlations classified on the bas…
quant-ph2025
Dissipative Dynamics and Symmetry Breaking in Bosonic Sachdev-Ye-Kitaev Lindbladian
Yifei Liu, Anish Kulkarni, Shinsei Ryu
We investigate a bosonic variant of the Sachdev-Ye-Kitaev (SYK) model coupled to a Lindbladian environment, focusing on the interplay between quantum many-body dynamics and dissipa…
cond-mat.dis-nn2025
Field theory of non-Hermitian disordered systems
Ze Chen, Kohei Kawabata, Anish Kulkarni +1
The interplay between non-Hermiticity and disorder gives rise to unique universality classes of Anderson transitions. Here, we develop a field-theoretical description of non-Hermit…