Semiclassical periodic-orbit theory for quantum spectra

• URL: http://arxiv.org/abs/2605.19019v1
• Date: Mon, 18 May 2026 18:40:45 GMT
• Title: Semiclassical periodic-orbit theory for quantum spectra
• Abstract summary: We discuss a derivation of the trace formula starting from the Feynman path integral.<n>We describe how the trace formula is used to explain universal features in the distribution of the quantum energy levels that are described by random matrix theory.
• Score: 2.2303839957967155
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Gutzwiller's trace formula has a central place in quantum chaos because it provides semiclassical approximations for quantum energy levels in classically chaotic systems by linking them to classical periodic orbits. In this didactic article, we discuss a derivation of the trace formula starting from the Feynman path integral. We then describe how the trace formula is used to explain universal features in the distribution of the quantum energy levels that are described by random matrix theory, and we give an overview of related work.

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