Dissipative Physical Dynamics

Dear Colleagues,

Although the conceptual framework of dissipation and irreversibility is rooted in thermodynamics, no physical discipline is truly independent of it. Moreover, it can be confidently stated that understanding the unidirectionality of processes and their potential "reversibility" is not only fundamentally significant at the level of axioms but also crucial from the technical implementation perspective. This Special Issue highlights the challenges of dissipation and the reconstruction of the original state in processes described by classical and modern frameworks. The possibilities are vast; therefore, narrowing them down is unnecessary. As an example, some of the most pertinent topics in this context include studies related to signal propagation and information transmission. These are not limited to quantum transport phenomena but also address charge, spin, and thermal effects occurring in nano- and microcircuits, as well as how changes in amplitude and phase relationships in optical signal transmission can be translated into an appropriate dissipation indicator. An intriguing question is whether dissipation can be introduced in particle physics or cosmology. For the processes under investigation, it is worth highlighting how thermodynamic constraints manifest and how the degree of dissipation should be expressed.

To summarize, we outline the key areas where new results are most anticipated:

1. Mathematical modeling of dissipative systems: Modeling dissipation effects in various systems.
2. Thermal processes and entropy production: Entropy generation in dissipative systems. Irreversible processes and their roles in thermodynamic systems. Viscosity, friction, electrical resistance, and other dissipation mechanisms. Dissipative effects in material structures.
3. Appearance of dissipative processes in nanoscale systems: Simulation and experimental studies of dissipative systems.
4. Quantum mechanical dissipation: Energy emission into the environment within the quantum system. Dynamics of dissipative quantum states and decoherence.
5. Astrophysical and cosmological aspects: Dissipation mechanisms in stars, planets, galaxies, and interstellar space.

Dr. Katalin Mária Gambár
Guest Editor

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