What is planck particle?

The Planck particle is a hypothetical concept in theoretical physics that is thought to be the smallest possible unit of length, mass, and energy according to the Planck scale, which is the scale at which quantum effects of gravity become significant.

The Planck length is estimated to be about 1.616229(38) x 10^-35 meters, the Planck mass is about 2.176470(51) x 10^-8 kilograms, and the Planck energy is about 1.2209(23) x 10^19 GeV. These values represent the fundamental, indivisible units of length, mass, and energy according to the Planck scale.

The existence of Planck particles has not been observed experimentally, and their properties are mainly theoretical in nature. They are believed to be the smallest building blocks of spacetime, and represent the fundamental building blocks of the universe at the smallest scales.

The concept of Planck particles plays a significant role in various theories of quantum gravity, such as loop quantum gravity and string theory, which attempt to reconcile the principles of quantum mechanics and general relativity. The Planck scale is considered to be the ultimate limit of our current understanding of physical laws, and studying Planck particles could provide insights into the nature of space, time, and matter at the most fundamental level.