The quantum geometric tensor from generating functions
| Autor: | Javier Alvarez-Jimenez, J. David Vergara |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics Physics and Astronomy (miscellaneous) Generating function FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas symbols.namesake Quartic function 0103 physical sciences Path integral formulation symbols Berry connection and curvature Quantum information Quantum Physics (quant-ph) 010306 general physics Hamiltonian (quantum mechanics) Quantum Harmonic oscillator Mathematical physics |
| Popis: | We introduce a new method to compute the Quantum Geometric Tensor, this procedure allows us to compute the Quantum Information Metric and the Berry curvature perturbatively for a theory with an arbitrary interaction Hamiltonian. The calculation uses the generating function method, and it is illustrated with the harmonic oscillator with a linear and a quartic perturbation. 19 pages |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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