scholarly journals The Hamilton-Jacobi equation and holographic renormalization group flows on sphere

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Nakwoo Kim ◽  
Se-Jin Kim

Abstract We study the Hamilton-Jacobi formulation of effective mechanical actions associated with holographic renormalization group flows when the field theory is put on the sphere and mass terms are turned on. Although the system is supersymmetric and it is described by a superpotential, Hamilton’s characteristic function is not readily given by the superpotential when the boundary of AdS is curved. We propose a method to construct the solution as a series expansion in scalar field degrees of freedom. The coefficients are functions of the warp factor to be determined by a differential equation one obtains when the ansatz is substituted into the Hamilton-Jacobi equation. We also show how the solution can be derived from the BPS equations without having to solve differential equations. The characteristic function readily provides information on holographic counterterms which cancel divergences of the on-shell action near the boundary of AdS.

2015 ◽  
Vol 93 (9) ◽  
pp. 988-994 ◽  
Author(s):  
Pietro Donà ◽  
Astrid Eichhorn ◽  
Roberto Percacci

We discuss the compatibility of quantum gravity with dynamical matter degrees of freedom. Specifically, we present bounds we obtained in Donà et al. (Phys. Rev. D, 89, 084035 (2014) doi:10.1103/PhysRevD.89.084035 ) on the allowed number and type of matter fields within asymptotically safe quantum gravity. As a novel result, we show bounds on the allowed number of spin-3/2 (Rarita–Schwinger) fields (e.g., the gravitino). These bounds, obtained within truncated renormalization group flows, indicate the compatibility of asymptotic safety with the matter fields of the standard model. Further, they suggest that extensions of the matter content of the standard model are severely restricted in asymptotic safety. This means that searches for new particles at colliders could provide experimental tests for this particular approach to quantum gravity.


2000 ◽  
Vol 2000 (06) ◽  
pp. 023-023 ◽  
Author(s):  
Vanicson L Campos ◽  
Gabriele Ferretti ◽  
Henric Larsson ◽  
Bengt E.W Nilsson ◽  
Dario Martelli

2001 ◽  
Vol 2001 (01) ◽  
pp. 021-021 ◽  
Author(s):  
Massimo Bianchi ◽  
Oliver DeWolfe ◽  
Daniel Z Freedman ◽  
Krzysztof Pilch

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