Surface Tension of the Black Hole Horizon

The idea of treating the horizon of a black hole as a stretched membrane with surface tension has a long history. In this work, we discuss the microscopic origin of the surface tension of the horizon in quantum pictures of spaces, which are Bose‐Einstein condensates of gravitons. The horizon is a phase interface of gravitons, the surface tension of which is found to be a result of the difference in the strength of the interaction between the gravitons on its two sides. The gravitational source, such as a Schwarzschild black hole, creates a transitional zone by changing the energy and distribution of its surrounding gravitons. Archimedes' principle for gravity can be expressed as follows: “the gravity on an object is equal to the weight of the gravitons that it displaces.” The idea of treating the horizon of a black hole as a stretched membrane with surface tension has a long history. In this work, the authors discuss the microscopic origin of the surface tension of the horizon in quantum pictures of spaces, which are Bose‐Einstein condensates of gravitons. The horizon is a phase interface of gravitons, the surface tension of which is found to be a result of the difference in the strength of the interaction between the gravitons on its two sides. The gravitational source, such as a Schwarzschild black hole, creates a transitional zone by changing the energy and distribution of its surrounding gravitons. Archimedes’ principle for gravity can be expressed as follows: “the gravity on an object is equal to the weight of the gravitons that it displaces.”