Stealth scalar fields in dissipative FLRW cosmology obey a generalized Riccati equation with dissipative pressure as driving term, admitting a stable entropy-selected attractor and an unstable repeller that track non-equilibrium evolution to de Sitter.
Paul, Physical Review D111, 083540 (2025), arXiv:2504.00422 [gr-qc]
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Defines Landauer entropy for static spherically symmetric spacetimes as a surface integral over geodesic entropies, establishes a second law under mild assumptions, and relates the result to Bekenstein-Hawking entropy.
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Cosmological Stealth fields and Non-Equilibrium thermodynamics
Stealth scalar fields in dissipative FLRW cosmology obey a generalized Riccati equation with dissipative pressure as driving term, admitting a stable entropy-selected attractor and an unstable repeller that track non-equilibrium evolution to de Sitter.
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Landauer entropy of spacetime
Defines Landauer entropy for static spherically symmetric spacetimes as a surface integral over geodesic entropies, establishes a second law under mild assumptions, and relates the result to Bekenstein-Hawking entropy.