3 papers
cond-mat.stat-mech2026
Deriving the second law of thermodynamics and exploring its boundaries
Yu Qiao
The second law of thermodynamics still lacks a general proof applicable to both classical and quantum systems across broad ranges of time scales, interactions, and degrees of noneq…
cond-mat.stat-mech2025
Searching for quantum non-thermodynamic phenomena
Yu Qiao
Recent research on the fundamentals of statistical mechanics has led to an interesting discovery [1-3]: With locally nonchaotic barriers, as Boltzmann's H-theorem is inapplicable,…
cond-mat.stat-mech2024
Second law of thermodynamics: Spontaneous cold-to-hot heat transfer in a nonchaotic medium
Yu Qiao, Zhaoru Shang
It has long been known that, fundamentally different from a large body of rarefied gas, when a Knudsen gas is immersed in a thermal bath, it may never reach thermal equilibrium. Th…