Optimized perturbation method for the propagation in the anharmonic oscillator potential
Anna Okopińska
Abstract
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.
Create a lesson
Related papers
Pinning of a High-Energy Wavepacket by a Single Impurity
Fartash Chalangari, Anant Vijay Varma, Joonas Keski-Rahkonen et al.
Loss-Tolerant Measurement-Device-Independent QKD over Untrusted Repeaters via High-Dimensional Time-Bin Multiplexing
Yu-Chun Yin, Ching-Yi Lai, Alexei Ashikhmin
Strong subadditivity of topological entropy on the torus: Rényi order and non-Abelian structure
Yi Liang
Advances in quantum optomechanical control based on cavity cold-atom systems
Baijun Li, Tianxiang Lu, Jie Wang et al.
Metric-Changing Quasi-Hermitian Quenches: Normalized Loschmidt Amplitude and Complex-Time Zeros
Xu-Yang Hou, Jia-Chen Tang, Hao Guo
Multi-Instantons and Exact-WKB Stokes Jumps in Multi-Well Quantum Mechanics
Alireza Behtash, Syo Kamata