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quant-ph2022
Derivation of a $\PT$-Symmetric Sine-Gordon Model from a Nonequilibrium Spin-Boson System via Keldysh Functional Integrals
Vinayak M. Kulkarni
We present a microscopic derivation from a nonequilibrium spin-boson model to a $\PT$-symmetric non-Hermitian sine-Gordon (SG) effective theory, via the Keldysh functional-integral…
quant-ph2021
Functional Renormalization analysis of Bose-Einstien Condensation through complex interaction in Harmonic Oscillator; Can Bendixson criteria be extended to complex time?
Vinayak M Kulkarni
An arbitrary form of complex potential perturbation in an oscillator consists of many exciting questions in open quantum systems. These often provide valuable insights in a realist…