The possibility of ambiguities in the regulator procedure used in the calculation of the rxdiat ivc corrections to muon decay is discussed. It is pointed out that t.here is a particular gauge, namely the "Landau gauge, " in which all the int.egrals are finit.e without, regul:rriz:?tion and which ob
Low lying states of a system of interacting bosons
β Scribed by Eugene P Gross
- Publisher
- Elsevier Science
- Year
- 1962
- Tongue
- English
- Weight
- 921 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0003-4916
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π SIMILAR VOLUMES
The ground-state wave function for a system of interacting bosons is written in the form Assuming the existence of Fourier coefficients for the potential V(rSj) and the correlation functions U, , the Schroedinger equation transforms into a set of coupled nonlinear differential-integral equations for
Bose condensation is characterized by a condition on the zero-frequency fourier component of the self-energy at the critical value of the chemical potential. This condition is used to show that under the action of an external linear perturbation the k = 0 mode goes over into a coherent state in the