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摘要： What is nature of time remains the most important problem in Nature. Here we address a closely related but much simpler problem:
what is the nature of temperature. In one seminar presented at 北工大 last July, I discussed the Nature of classical Temperature in quantum materials. Here
I will investigate the Nature of quantum Temperature in a classical black hole. We critically examine the
possibility of Hawking temperature or Hawking radiations from any artificial black holes simulated in various materials.
The AdS/CFT correspondence was explored from the mapping between the two temperatures.
A full quantum theory of gravity is needed to unify the two temperatures into the same framework.
The implications on the Eigenstate Thermalization Hypothesis (ETH), RT formula, astronomical black holes in an expanding universe
and two coupled Sachdev-Ye-Kitaev models to simulate a transversal wormhole are given.
The experimental detections of various novel Temperature effects are discussed.