The discussion centers on the concept of temperature in a vacuum, particularly in relation to virtual particles. It establishes that a perfect vacuum, devoid of virtual particles, would theoretically have a temperature of zero Kelvin. The conversation also touches on the average energy content of the vacuum, likening it to the cosmological constant of approximately 6e-9 Joule/m3. Participants debate the implications of virtual temperature and its relation to kinetic energy in space, concluding that even in a near-perfect vacuum, temperatures can be just a few nano Kelvin above absolute zero.
PREREQUISITESPhysicists, cosmologists, and students of quantum mechanics interested in the properties of vacuum and temperature at subatomic levels.