257 citations · 1.1k across the 71 of their papers we have counts for
74 papers
Action for classical, quantum, closed and open systems
Janos Polonyi
It is well known that the action functional can be used to define classical, quantum, closed, and open dynamics in a generalization of the variational principle and in the path int…
Quantum phenomena inside a black hole: quantization of the scalar field iniside horizon in Schwarzschild spacetime
Pawel Gusin, Andrzej Radosz, Andy T. Augousti +3
We discuss the problem of the quantization and dynamic evolution of a scalar free field in the interior of a Schwarzschild black hole. A unitary approach to the dynamics of the qua…
Symmetry restoration, Tunnelling and the Null Energy Condition
Jean Alexandre, Janos Polonyi
A finite volume allows tunnelling between degenerate vacua in Quantum Field Theory, and leads to remarkable energetic features, arising from the competition of different saddle poi…
Macroscopic limit of quantum systems
Janos Polonyi
Classical physics is approached from quantum mechanics in the macroscopic limit. The technical device to achieve this goal is the quantum version of the central limit theorem, deri…
Elementary open quantum states
Janos Polonyi, Ines Rachid
It is shown that the mixed states of a closed dynamics support a reduplicated symmetry, which is reduced back to the subgroup of the original symmetry group when the dynamics is op…
Tunnelling and dynamical violation of the Null Energy Condition
Jean Alexandre, Janos Polonyi
The Null Energy Condition is considered the most fundamental of the energy conditions, on which several key results, such as the singularity theorems, are based. The Casimir effect…