Phys.org November 7, 2024 Researchers in Germany derived a general theory of the viscosity of gases based on the relativistic Langevin equation and nonaffine linear response theory. The proposed relativistic theory was able to recover the viscosity of nonrelativistic classical gases, with all its key dependencies on mass, temperature, particle diameter, and Boltzmann constant, in the limit of Lorentz factor =1. It also unveiled the relativistic enhancement mechanism of viscosity. According to the researchers in the limit of ultra relativistic fluids, the theory provides an analytical formula which reproduces the cubic increase of viscosity with temperature in agreement with various […]
Tag Archives: Relativity
Does relativity lie at the source of quantum exoticism?
Phys.org April 2, 2020 In quantum mechanics inherent randomness happens without any cause. Randomness that appears in non-relativistic quantum theory tacitly respects relativity, for example, it makes instantaneous signaling impossible. An international team of researchers (Poland, Singapore, UK) argues that this is because the special theory of relativity can itself account for such a random behavior. They show that the full mathematical structure of the Lorentz transformation, the one which includes the superluminal part, implies the emergence of non-deterministic dynamics, together with complex probability amplitudes and multiple trajectories. This indicates that the connections between the two seemingly different theories are […]