About isospectral deformations of discrete laplacians

Author(s):  
Pierre van Moerbeke
Keyword(s):  

2011 ◽  
Vol 30 (4) ◽  
pp. 1-10 ◽  
Author(s):  
Marc Alexa ◽  
Max Wardetzky


2019 ◽  
Vol 277 (4) ◽  
pp. 965-993 ◽  
Author(s):  
Kenichi Ito ◽  
Arne Jensen
Keyword(s):  


1992 ◽  
Vol 10 (3-4) ◽  
pp. 325-334 ◽  
Author(s):  
Robert E. Lynch


The application of Regge calculus to quantum gravity and quantum field theory in a curved background is discussed. A discrete form of exterior differential calculus is developed, and this is used to obtain Laplacians for P -forms on the Regge manifold. To assess the accuracy of these approximations, the eigenvalues of the discrete Laplacians were calculated for the regular tesselations of S 2 and S 3 . The results indicate that the methods obtained in this paper may be used in curved space–times with an accuracy comparing with that obtained in lattice gauge theories on a flat background. It also becomes evident that Regge calculus provides particularly suitable lattices for Monte-Carlo techniques.





Author(s):  
E. Korotyaev ◽  
K. Ryadovkin ◽  
N. Saburova
Keyword(s):  




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