How often they pop in/out of existence.mfb said:What do you mean with "frequency of virtual particles"? Virtual particles are a tool in calculations, they are not real.
As I said, that is not a meaningful question.How often they pop in/out of existence.
So if it is not about virtual particles, then what is the cause of Quantum Brownian Motion?mfb said:As I said, that is not a meaningful question.
You cannot say "see! there was a virtual particle". They are a mathematical tool in quantum field theory.
mfb said:Interactions with other particles, described with quantum theory.
http://arxiv.org/abs/1009.0843
Everything around the particle you consider (that is an answer to both questions).I mean the what is the cause of the "nucleus random path"? And who are those particles?
Their mass must be very very small (smaller than relativistic mass of photon).mfb said:Everything around the particle you consider (that is an answer to both questions).
Quantum Brownian Motion is a phenomenon in quantum mechanics where a particle undergoes random fluctuations due to its interactions with a surrounding environment. This results in the particle's position and momentum becoming uncertain, similar to the behavior of a brownian particle in classical physics.
Quantum Brownian Motion is caused by the particle's interactions with its environment, such as other particles or fields. These interactions lead to the particle gaining or losing energy, resulting in its position and momentum becoming uncertain.
The main difference between Classical and Quantum Brownian Motion is the underlying physical laws that govern them. Classical Brownian Motion follows the laws of classical mechanics, while Quantum Brownian Motion follows the laws of quantum mechanics. This leads to differences in the behavior and predictions of the two types of motion.
Quantum Brownian Motion has applications in various fields, including quantum computing, quantum information theory, and quantum thermodynamics. It also plays a crucial role in studying the behavior of particles in quantum systems and understanding the effects of decoherence.
Quantum Brownian Motion is studied and measured using various experimental techniques, such as single-particle tracking, fluorescence correlation spectroscopy, and quantum state tomography. These techniques allow scientists to observe the effects of the particle's interactions with its environment and make predictions about its behavior.