Quantum River said:What is the meaning of temperature in a quantum system? Surely temperature concerns lots of particles. (More is different. -Philip W. Anderson) So the wave function of the system is very very big. Could temperature only exist in a mixed state system. But how do we define temperature? How does temperature influence the evolution of the system? The Schrodinger equation alone controls the evolution of the system already.
Quantum River said:What is the meaning of temperature in a quantum system? Surely temperature concerns lots of particles. (More is different. -Philip W. Anderson) So the wave function of the system is very very big. Could temperature only exist in a mixed state system. But how do we define temperature? How does temperature influence the evolution of the system? The Schrodinger equation alone controls the evolution of the system already.
Temperature in quantum systems refers to the average energy of particles in a system, which determines the system's thermal equilibrium and behavior.
Temperature in quantum systems is measured using the Boltzmann distribution, which relates the temperature to the probability of particles occupying different energy levels.
The temperature of a quantum system affects its behavior and properties, such as its phase transitions, energy levels, and entanglement. It also determines the rate at which quantum processes occur.
Yes, temperature in quantum systems can be negative. This occurs when the average energy of particles is higher than the energy of the system's ground state, leading to a negative temperature on the Kelvin scale. Negative temperature systems exhibit unique properties, such as having a higher energy state as the most probable state.
Temperature in quantum systems differs from classical systems in that the energy of particles is quantized, meaning they can only exist at certain energy levels. This results in different temperature behaviors, such as the possibility of negative temperatures and the effect of quantum phases.