In [L. Rastelli, et al., hep-th/0111281] the complete set of eigenvectors and eigenvalues of Neumann matrices was found. It was shown also that the spectral density contains a divergent constant piece that being regulated by truncation at level L equals log L/2pi. In this Letter we find an exact analytic expression for the finite part of the spectral density. This function allows one to calculate finite parts of various determinants arising in string field theory computations. We put our result to some consistency checks. (C) 2003 Published by Elsevier Science B.V.
机构:
Scuola Int Super Studi Avanzati, SISSA, I-34014 Trieste, Italy
Ist Nazl Fis Nucl, Sez Trieste, Rome, ItalyScuola Int Super Studi Avanzati, SISSA, I-34014 Trieste, Italy
Bonora, L.
Santos, R. J. Scherer
论文数: 0引用数: 0
h-index: 0
机构:
LAFEX, MCT, CBPF, BR-22290180 Rio De Janeiro, BrazilScuola Int Super Studi Avanzati, SISSA, I-34014 Trieste, Italy
Santos, R. J. Scherer
Tolla, D. D.
论文数: 0引用数: 0
h-index: 0
机构:
Sogang Univ, Ctr Quantum SpaceTime CQUEST, Seoul, South KoreaScuola Int Super Studi Avanzati, SISSA, I-34014 Trieste, Italy