45 citations · 177 across the 10 of their papers we have counts for
10 papers
The Cosmological Constant and Lorentz Invariance of the Vacuum State
Jurjen F. Koksma, Tomislav Prokopec
One hope to solve the cosmological constant problem is to identify a symmetry principle, based on which the cosmological constant can be reduced either to zero, or to a tiny value.…
Decoherence in an Interacting Quantum Field Theory: Thermal Case
Jurjen F. Koksma, Tomislav Prokopec, Michael G. Schmidt
We study the decoherence of a renormalised quantum field theoretical system. We consider our novel correlator approach to decoherence where entropy is generated by neglecting obser…
Decoherence and Dynamical Entropy Generation in Quantum Field Theory
Jurjen F. Koksma, Tomislav Prokopec, Michael G. Schmidt
We formulate a novel approach to decoherence based on neglecting observationally inaccessible correlators. We apply our formalism to a renormalised interacting quantum field theore…
Decoherence in Quantum Mechanics
Jurjen F. Koksma, Tomislav Prokopec, Michael G. Schmidt
We study decoherence in a simple quantum mechanical model using two approaches. Firstly, we follow the conventional approach to decoherence where one is interested in solving the r…
A Causal Alternative to Feynman's Propagator
Jurjen F. Koksma, W. Westra
The Feynman propagator used in the conventional in-out formalism in quantum field theory is not a causal propagator as wave packets are propagated virtually instantaneously outside…
Entropy and Correlators in Quantum Field Theory
Jurjen F. Koksma, Tomislav Prokopec, Michael G. Schmidt
It is well known that loss of information about a system, for some observer, leads to an increase in entropy as perceived by this observer. We use this to propose an alternative ap…