Special properties of the spectral representation, spectral multiplicities

1987 ◽  
pp. 150-161
Author(s):  
Joachim Weidmann
Keyword(s):  
Spectral Representation

scholarly journals Loops in AdS: from the spectral representation to position space. Part II

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Dean Carmi
Keyword(s):  
Spectral Representation ◽  
Tree Level ◽  
Point Function ◽  
Position Space ◽  
Gross Neveu Model ◽  
Loop Amplitudes

Abstract We continue the study of AdS loop amplitudes in the spectral representation and in position space. We compute the finite coupling 4-point function in position space for the large-N conformal Gross Neveu model on AdS3. The resummation of loop bubble diagrams gives a result proportional to a tree-level contact diagram. We show that certain families of fermionic Witten diagrams can be easily computed from their companion scalar diagrams. Thus, many of the results and identities of [1] are extended to the case of external fermions. We derive a spectral representation for ladder diagrams in AdS. Finally, we compute various bulk 2-point correlators, extending the results of [1].

Spectral representation in stochastic quantization

1990 ◽  
Vol 42 (4) ◽  
pp. 1166-1178 ◽  
Author(s):  
Hiromichi Nakazato
Keyword(s):  
Spectral Representation ◽  
Stochastic Quantization

The modified group delay feature: a new spectral representation of speech

2004 ◽  
Author(s):  
Hema A. Murthy ◽  
Rajesh Mahanand Hegde ◽  
Venkata Ramana Rao Gadde
Keyword(s):  
Group Delay ◽  
Spectral Representation ◽  
Modified Group Delay
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