Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems

Dabelow L, Reimann P (2020)
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES 75(5): 403-411.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Echo protocols provide a means to investigate the arrow of time in macroscopic processes. Starting from a nonequilibrium state, the many-body quantum system under study is evolved for a certain period of time tau. Thereafter, an (effective) time reversal is performed that would if implemented perfectly - take the system back to the initial state after another time period tau. Typical examples are nuclear magnetic resonance imaging and polarisation echo experiments. The presence of small, uncontrolled inaccuracies during the backward propagation results in deviations of the "echo signal" from the original evolution and can be exploited to quantify the instability of nonequilibrium states and the irreversibility of the dynamics. We derive an analytic prediction for the typical dependence of this echo signal for macroscopic observables on the magnitude of the inaccuracies and on the duration tau of the process, and verify it in numerical examples.
Stichworte
Echo Dynamics; Many-Body Systems; Time Inversion
Erscheinungsjahr
2020
Zeitschriftentitel
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
Band
75
Ausgabe
5
Seite(n)
403-411
ISSN
0932-0784
eISSN
1865-7109
Page URI
https://pub.uni-bielefeld.de/record/2944200

Zitieren

Dabelow L, Reimann P. Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES. 2020;75(5):403-411.
Dabelow, L., & Reimann, P. (2020). Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 75(5), 403-411. doi:10.1515/zna-2019-0383
Dabelow, L., and Reimann, P. (2020). Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES 75, 403-411.
Dabelow, L., & Reimann, P., 2020. Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 75(5), p 403-411.
L. Dabelow and P. Reimann, “Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems”, ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, vol. 75, 2020, pp. 403-411.
Dabelow, L., Reimann, P.: Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES. 75, 403-411 (2020).
Dabelow, Lennart, and Reimann, Peter. “Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems”. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES 75.5 (2020): 403-411.

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