Why Is It Not Easy To Quantize Gravity?

It is not easy to quantize gravity because constants involved in gravitational interaction such as Netwon’s constant and coupling constant are having dimensions and these dimensions are inverse of mass squared. When gravity is compared with Fermi theory which also involves coupling constants that are dimensionless making the dynamics controllable. Therefore, by controlling the quantities involved in gravity, the quantities will become more complex. So it is not easy to quantize gravity. It is not easy to quantize gravity because constants involved in gravitational interaction such as Netwon’s constant and coupling constant are having dimensions and these dimensions are inverse of mass squared. When gravity is compared with Fermi theory which also involves coupling constants that are dimensionless making the dynamics controllable. Therefore, by controlling the quantities involved in gravity, the quantities will become more complex. So it is not easy to quantize gravity.

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