On the number of relevant operators in asymptotically safe gravityReportar como inadecuado



 On the number of relevant operators in asymptotically safe gravity


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The asymptotic safety scenario of gravity conjectures that i the quantum field theory of gravity exists thanks to the presence of a non-trivial ultraviolet fixed point of the renormalization group, and that ii the fixed point has only a finite number of relevant perturbations, i.e. a finite number of UV-stable directions or in other words, a finite number of free parameters to be fixed experimentally. Within the fR approximation of the functional renormalization group equation of gravity, we show that assuming the first half of the conjecture to be true, the remaining half follows from general arguments, that is, we show that assuming the existence of a non-trivial fixed point, the fact that the number of relevant directions is finite is a general consequence of the structure of the equations.



Autor: Dario Benedetti

Fuente: https://archive.org/







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