49 citations · 128 across the 5 of their papers we have counts for
5 papers
Condensation of Ideal Bose Gas Confined in a Box Within a Canonical Ensemble
Konstantin Glaum, Hagen Kleinert, Axel Pelster
We set up recursion relations for the partition function and the ground-state occupancy for a fixed number of non-interacting bosons confined in a square box potential and determin…
Bose-Einstein Condensation Temperature of Dipolar Gas in Anisotropic Harmonic Trap
Konstantin Glaum, Axel Pelster
We consider a dilute gas of dipole moments in an arbitrary harmonic trap and treat both the short-range, isotropic delta-interaction and the long-range, anisotropic dipole-dipole i…
Critical Temperature of Weakly Interacting Dipolar Condensates
Konstantin Glaum, Axel Pelster, Hagen Kleinert +1
We calculate perturbatively the effect of a dipolar interaction upon the Bose-Einstein condensation temperature. This dipolar shift depends on the angle between the symmetry axes o…
Recursive Graphical Solution of Closed Schwinger-Dyson Equations in phi^4-Theory -- Part1: Generation of Connected and One-Particle Irreducible Feynman Diagrams
Axel Pelster, Konstantin Glaum
Using functional derivatives with respect to the free correlation function we derive a closed set of Schwinger-Dyson equations in phi^4-theory. Its conversion to graphical recursio…
Recursive Graphical Construction of Tadpole-Free Feynman Diagrams and Their Weights in phi^4-Theory
Axel Pelster, Konstantin Glaum
We review different approaches to the graphical generation of the tadpole-free Feynman diagrams of the self-energy and the one-particle irreducible four-point function. These are n…