257 citations · 1.1k across the 71 of their papers we have counts for
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A Gaussian density matrix under decoherence and friction
Janos Polonyi
The time evolution of a Gaussian density matrix of a one dimensional particle, generated by a quadratic, effective Lagrangian, describing a harmonic potent…
Spontaneous breakdown of the time reversal symmetry
Janos Polonyi
The role of the environment initial conditions in the breaking of the time reversal symmetry of effective theories and in generating the soft irreversibility is studied by the help…
Dissipation and decoherence by ideal quantum gas
Janos Polonyi
The effective Lagrangian of a test particle, interacting with an ideal gas, is calculated with in the closed time path formalism in the one-loop and the leading order of the partic…
Instability Induced Renormalization
Jean Alexandre, Vincenzo Branchina, Janos Polonyi
It is pointed out that models with condensates have nontrivial renormalization group flow on the tree level. The infinitesimal form of the tree level renormalization group equation…