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- W4379958319 abstract "The study of correlation functions in quantum systems plays a vital role in decoding their properties and gaining insights into physical phenomena. In this context, the Gell-Mann and Low theorem have been employed to simplify computations by canceling connected vacuum diagrams. Building upon the essence of this theorem, we propose a modification to the adiabatic evolution process by adopting the two-state vector formalism with time symmetry. This novel perspective reveals correlation functions as weak values, offering a universal method for recording them on the apparatus through weak measurement. To illustrate the effectiveness of our approach, we present numerical simulations of perturbed quantum harmonic oscillators, addressing the intricate interplay between the coupling coefficient and the number of ensemble copies. Additionally, we extend our protocol to the domain of quantum field theory, where joint weak values encode crucial information about the correlation function. This comprehensive investigation significantly advances our understanding of the fundamental nature of correlation functions and weak measurements in quantum theories." @default.
- W4379958319 created "2023-06-09" @default.
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- W4379958319 date "2023-06-07" @default.
- W4379958319 modified "2023-09-28" @default.
- W4379958319 title "Weak-Valued Correlation Functions: Insights and Precise Readout Strategies" @default.
- W4379958319 doi "https://doi.org/10.48550/arxiv.2306.04398" @default.
- W4379958319 hasPublicationYear "2023" @default.
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