Jacobsen's recent papers do not attempt to solve the Cosmological Constant Problem. The discussion highlights the significance of understanding the origin of outgoing modes, which may arise from superluminal or subluminal modes, or potentially from microscopic degrees of freedom near the horizon of a black hole. The conversation references specific models, including a linear model in cosmology and quantum field theory on a 1+1 dimensional growing lattice, but concludes that Jacobsen's work does not address the Cosmological Constant Problem directly.
PREREQUISITESThe discussion is beneficial for theoretical physicists, cosmologists, and researchers interested in black hole dynamics and the foundations of quantum field theory.
The central issue in my view is the origin of the outgoing modes [18]. In a con-
densed matter model with a UV cutoff these must arise from somewhere other than
the near horizon region, either from “superluminal” modes behind the horizon, from
“subluminal” modes that are dragged towards the horizon and then released, or from
no modes at all. The last scenario refers to the possibility that modes “assemble”
from microscopic degrees of freedom in the near horizon region. This seems most
likely the closest to what happens near a spacetime black hole, and for that reason
deserves to be better understood. Other than a linear model that has been studied
in the cosmological context [19], and a linear model of quantum field theory on a
1+1 dimensional growing lattice [20], I don’t know of any work focusing on how to
characterize or study such a process.
John86 said:Does Jacobsen tries to solve Cosmological constant problem with these papers ?