The quantum space-time and the Unruh effect
A way to encode acceleration directly into fields has recently being proposed, thus establishing a new kind of fields, the accelerated fields. The definition of accelerated fields points to the quantization of space and time, analogously to the way quantities like energy and momentum are quantized in usual quantum field theories. Unruh effect has been studied in connection with quantum field theory in curved spacetime and it is described by recruiting a uniformly accelerated observer. In this talk we present the main ideas behind the accelerated fields and how the Unruh effect can be derived from these ideas, without the need of changing the reference frame.