Unruh effect disappears in loop quantum gravity

Absence of Unruh effect in polymer quantization

We show that the famous prediction of standard quantum field theory in which fock vacuum state appears as a thermal state with respect to an uniformly accelerating observer disappears if, instead of using fock quantization, one uses polymer quantization or loop quantization, the quantization method used in loop quantum gravity.We also show that the polymer vacuumstate remains a vacuum state even for the accelerating observer in the sense that expectation value of number density operator in it remains zero.