M
Miguel A. Bastarrachea-Magnani
Researcher at Aarhus University
Publications - 61
Citations - 1183
Miguel A. Bastarrachea-Magnani is an academic researcher from Aarhus University. The author has contributed to research in topics: Quantum & Coherent states. The author has an hindex of 16, co-authored 56 publications receiving 798 citations. Previous affiliations of Miguel A. Bastarrachea-Magnani include Universidad Autónoma Metropolitana & National Autonomous University of Mexico.
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Journal ArticleDOI
Quantum and Classical Lyapunov Exponents in Atom-Field Interaction Systems
Jorge Chávez-Carlos,B. López-del-Carpio,Miguel A. Bastarrachea-Magnani,Pavel Stránský,Sergio Lerma-Hernández,Lea F. Santos,Jorge G. Hirsch +6 more
TL;DR: The exponential growth of the out-of-time-ordered correlator (OTOC) has been proposed as a quantum signature of classical chaos and is studied in the Dicke model, where two-level atoms cooperatively interact with a quantized radiation field.
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Positive quantum Lyapunov exponents in experimental systems with a regular classical limit
Saúl Pilatowsky-Cameo,Jorge Chávez-Carlos,Miguel A. Bastarrachea-Magnani,Pavel Stránský,Sergio Lerma-Hernández,Lea F. Santos,Jorge G. Hirsch +6 more
TL;DR: In this article, it was shown that for experimentally accessible parameters, OTOCs can grow exponentially also when the Dicke model is in the regular regime, and the same holds for the Lipkin-Meshkov-Glick model, which is integrable and also experimentally realizable.
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Comparative quantum and semiclassical analysis of atom-field systems. I. Density of states and excited-state quantum phase transitions
TL;DR: In this article, the authors analyzed the density of states in the semiclassical limit and compared it with numerical results for the quantum case in large Hilbert spaces, taking advantage of efficient methods recently developed.
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Comparative quantum and semiclassical analysis of atom-field systems. II. Chaos and regularity
TL;DR: In this article, the nonintegrable Dicke model and its integrable approximation, the Tavis-Cummings model, are studied as functions of both the coupling constant and the excitation energy.
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Classical chaos in atom-field systems.
TL;DR: Results show clearly that both phenomena, ESQPTs and chaos, respond to different mechanisms, and maps in the space of coupling and energy, where ergodic properties are observed in the model are obtained.