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The saddle point method may be ineffective for the planar approximation

โœ Scribed by Franco Riva; Daniela Zanon


Book ID
113345354
Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
196 KB
Volume
110
Category
Article
ISSN
0370-2693

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The Saddle-Point Method for Condensed Bo
โœ Martin Holthaus; Eva Kalinowski ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 373 KB

The application of the conventional saddle-point approximation to condensed Bose gases is thwarted by the approach of the saddle-point to the ground-state singularity of the grand canonical partition function. We develop and test a variant of the saddle-point method which takes proper care of this c