1998/07/17 by Anna Okopińska
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Anharmonicity #Dust and Plasma Wave Phenomena #Energy density #Exact solutions in general relativity #Formalism (music) #Perturbation (astronomy) #Perturbation theory (quantum mechanics) #Quantum Mechanics and Non-Hermitian Physics #Range (aeronautics) #quant-ph
paper · pdf · doi:10.1016/s0375-9601(98)00750-6
published as Phys.Lett. A249 (1998) 259-264 · 13 pages, plain LATEX, 3 compressed and uuencoded Postscript figures, submitted to Phys.Lett.A
arxiv created 1998/07/17 · openalex publication_date 1998/12/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The application of the optimized expansion for the quantum-mechanical propagation in the anharmonic potential λx4 is discussed for real and imaginary time. The first order results in the imaginary time formalism provide approximations to the free energy and particle density which agree well with the exact results in the whole range of temperatures.