Holonomy groups of Lorentzian manifolds: classification, examples, and applications

Author(s):  
Anton Galaev ◽  
Thomas Leistner
2015 ◽  
Vol 70 (2) ◽  
pp. 249-298 ◽  
Author(s):  
A S Galaev

2013 ◽  
Vol 174 (3) ◽  
pp. 377-402 ◽  
Author(s):  
Giovanni Calvaruso ◽  
Amirhesam Zaeim
Keyword(s):  

1991 ◽  
Vol 23 (4) ◽  
pp. 372-374 ◽  
Author(s):  
D. R. Wilkins
Keyword(s):  

1968 ◽  
Vol 19 (2) ◽  
pp. 212-215
Author(s):  
D. V. Alekseevskii
Keyword(s):  

2006 ◽  
Vol 03 (07) ◽  
pp. 1349-1357 ◽  
Author(s):  
V. V. KOZLOV ◽  
I. V. VOLOVICH

The eigenvalue problem for the square integrable solutions is studied usually for elliptic equations. In this paper we consider such a problem for the hyperbolic Klein–Gordon equation on Lorentzian manifolds. The investigation could help to answer the question why elementary particles have a discrete mass spectrum. An infinite family of square integrable solutions for the Klein–Gordon equation on the Friedman type manifolds is constructed. These solutions have a discrete mass spectrum and a finite action. In particular the solutions on de Sitter space are investigated.


Author(s):  
V. P. Akulov ◽  
D. V. Volkov ◽  
V. A. Soroka
Keyword(s):  

Author(s):  
John K. Beem ◽  
Paul E. Ehrlich ◽  
Steen Markvorsen ◽  
Gregory J. Galloway

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