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| ai.viXra.org > Thermodynamics and Energy > 2512 |
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[3] ai.viXra.org:2512.0080 [pdf] submitted on 2025-12-22 21:26:45
Authors: Satyajit Beura
Comments: 3 Pages. [License:] CC BY 4.0
This paper investigates Transient Memory Encoding within non-equilibrium systems, specifically through the lens of local pressure heterogeneity. We propose that localized fluctuations in pressure act as temporary information storage units before the system returns to equilibrium. By mapping these heterogeneities, we demonstrate a physical basis for short-term memory retention in complex systems, bridging the gap between statistical mechanics and information theory.
Category: Thermodynamics and Energy
[2] ai.viXra.org:2512.0061 [pdf] submitted on 2025-12-16 22:14:29
Authors: Lluis Eriksson
Comments: 11 Pages.
We derive operational lower bounds on the minimal thermodynamic power required to maintain quantum coherence against uncontrolled open-system dynamics. Work is defined as the increase of non-equilibrium free energy stored in an explicit battery at bath temperature $T$, and admissible controls are battery-assisted thermal operations implemented by global energy-conserving unitaries. Coherence is quantified by relative entropy to a conditional expectation, $Coh^{E}(ho):=S(ho|E[ho])$.For energy pinching $D$, we prove (i) a total maintenance-power bound $P_{min}(ho;Lcal,T)ge kB T,dot{Coh}^{D}_{mathrm{loss}}(ho)$ under an explicit diagonal-contraction hypothesis (satisfied by Davies generators), and (ii) an assumption-free extra-power bound $P_{mathrm{extra}}(ho;Lcal,T)ge kB T,dot{Coh}^{D}_{mathrm{loss}}(ho)$, where $P_{mathrm{extra}}$ is defined operationally as an infimum over pairs of strategies (full-state maintenance versus population maintenance), capturing the incremental stabilization cost of coherence at fixed populations. We also provide a conditional extension to general $gamma_S$-preserving conditional expectations and a Type III split blueprint. Geometric inputs enter only through explicit interface assumptions, separating one-shot work bounds from conditional maintenance-power scalings. These results give an operational resource criterion for quantum-to-classical behavior, rather than a collapse theory.
Category: Thermodynamics and Energy
[1] ai.viXra.org:2512.0038 [pdf] submitted on 2025-12-10 07:32:25
Authors: Zhi Cheng
Comments: 31 Pages.
The classical N-body problem’s microscopic chaos and dense stellar systems’ computational challenges demand effective macroscopic descriptions. Building on Cheng’s thermodynamic analogy, this study models a dense 4-million solar-mass stellar system (1.6 light-years radius) as an equilibrium ideal gas, incorporating an effective Boltzmann constant and virial theorem. Results show a quasi-equilibrium state with 1.02×10u2076 K effective temperature, 1.17×10u207b² Pa gravitational pressure, and 145.4 km/s stellar root-mean-square velocity. This confirms thermodynamics bypasses microscopic chaos, offering a novel tool for compact astrophysical systems. A sparse Milky Way outskirts system (ignoring gravity) has far lower pressure, highlighting gravity’s key role. It is also worth noting that for the sparse stellar systems at the outskirts of a planet, their social temperature depends on the chosen frame of reference. Relative to the center-of-mass frame, the social temperature is very high, whereas relative to the local frame, the social temperature is significantly lower.
Category: Thermodynamics and Energy