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Abstract
The qtheory formalism aims to describe the thermodynamics and dynamics of the deep quantum vacuum. The thermodynamics leads to an exact cancellation of the quantumfield zeropointenergies in equilibrium, which partly solves the main cosmological constant problem. But, with reversible dynamics, the spatially flat Friedmann–Robertson–Walker universe asymptotically approaches the Minkowski vacuum only if the Big Bang already started out in an initial equilibrium state. Here, we extend qtheory by introducing dissipation from irreversible processes. Neglecting the possible instability of a deSitter vacuum, we obtain different scenarios with either a deSitter asymptote or collapse to a final singularity. The Minkowski asymptote still requires finetuning of the initial conditions. This suggests that, within the qtheory approach, the decay of the deSitter vacuum is a necessary condition for the dynamical solution of the cosmological constant problem.
Original language  English 

Pages (fromto)  268277 
Number of pages  10 
Journal  Journal of Experimental and Theoretical Physics 
Volume  125 
Issue number  2 
DOIs  
Publication status  Published  1 Aug 2017 
MoE publication type  A1 Journal articlerefereed 
Keywords
 Nuclei
 Particles
 Fields
 Gravitation
 Astrophysics
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TOPVAC: From Topological Matter to Relativistic Quantum Vacuum
Volovik, G., Nissinen, J., Eltsov, V., Rysti, J., Mäkinen, J., Rantanen, R., Zhang, K., Volard, M. & Ikäheimo, A.
01/10/2016 → 30/09/2022
Project: EU: ERC grants

Centre of Excellence in Low Temperature Quantum Phenomena and Devices
Hietala, N., Mäkinen, J., Eltsov, V., Volovik, G. & Rysti, J.
01/01/2015 → 31/12/2017
Project: Academy of Finland: Other research funding