Self-tuning of the cosmological constant

Understand

Here, I discuss the cosmological constant (CC) problems, in particular paying attention to the vanishing cosmological constant.

• There are three cosmological constant problems in particle physics.
• Hawking's idea of calculating the probability amplitude for our Universe is peaked at CC = 0 which I try to obtain after the initial inflationary period using a self-tuning model.
• I review what has been discussed on the Hawking type calculation, and present a (probably) correct way to calculate the amplitude, and show that the Kim-Kyae-Lee self-tuning model allows a finite range of parameters for the CC = 0 to have a singularly large probability, approached from the AdS side.