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I. Lyris

Publications and source records attributed to I. Lyris.

2 recordsLinked to original sources
arXiv2020

Coherent-state path integrals in the continuum via geometric de-quantization

We present a new method for the consistent construction of time-continuous coherent-state path integrals using the theory of half-form quantization. Through the inversion of the quantization procedure we construct a de-quantization map taking first order operators to their corresponding path integrals. We generalize our results using functional techniques, allowing for the consistent path integral study of more general operators, including higher orders and interactions.

quant-ph↗
arXiv2020

Fermionic path integrals and correlation dynamics in a 1D XY system

We derive time dependent correlation functions in an one dimensional XY spin model with the use of generating functionals, the latter being defined as path integrals over fermionic coherent states. We focus on the proper construction of the aforementioned integrals in order to avoid the inconsistencies usually encountered in the literature. The static limit of our results successfully reproduces the known ones, confirming the validity of our construction and allowing for further investigation of the dynamics. In the same context, we examine the case of a general driven transverse magnetic field, for which case we derive formulas for the equal-time correlation functions and confirm the consistency of our results with the Kibble-Zurek mechanism.

quant-ph↗