Quantum dynamics in a single excitation subspace: deviations from eigenstate thermalization via long time correlations

2023-02-21T13:36:07+01:00Tags: , , |

Authors: Nation, Charlie; Porras, Diego Journal: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL Publication date: 2022/11/25 DOI: 10.1088/1751-8121/aca3dc Abstract: In this work we study a scenario where unitary quantum dynamics in a many-body interacting system is restricted to a single excitation subspace. We ask how dynamics within to such a subspace may in general differ from [...]

Different routes to the classical limit of backflow

2023-01-30T17:49:21+01:00Tags: , , |

Authors: Mousavi, S., V; Miret-Artes, S. Journal: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL Publication date: 2022/11/25 DOI: 10.1088/1751-8121/aca36e Abstract: Decoherence is a well established process for the emergence of classical mechanics in open quantum systems. However, it can have two different origins or mechanisms depending on the dynamics one is considering, speaking then about intrinsic [...]

Helium Isotopes Quantum Sieving through Graphtriyne Membranes

2022-04-05T17:41:22+02:00Tags: , , , |

Authors: Hernandez, Marta I.; Bartolomei, Massimiliano; Campos-Martinez, Jose Journal: NANOMATERIALS Publication date: 2021/01/01 DOI: 10.3390/nano11010073 Abstract: We report accurate quantum calculations of the sieving of Helium atoms by two-dimensional (2D) graphtriyne layers with a new interaction potential. Thermal rate constants and permeances in an ample temperature range are computed and compared for both Helium isotopes. [...]

Laboratory Observation of, Astrochemical Search for, and Structure of Elusive Erythrulose in the Interstellar Medium

2022-04-05T17:41:19+02:00Tags: , , , , |

Authors: Insausti, Aran; Alonso, Elena R.; Tercero, Belen; Santos, Jose, I; Calabrese, Camilla; Vogt, Natalja; Corzana, Francisco; Demaison, Jean; Cernicharo, Jose; Cocinero, Emilio J. Journal: JOURNAL OF PHYSICAL CHEMISTRY LETTERS Publication date: 2021/02/04 DOI: 10.1021/acs.jpclett.0c03050 Abstract: Rotational spectroscopy provides the most powerful means of identifying molecules of biological interest in the interstellar medium (ISM), but [...]

Gigahertz Frame Rate Imaging of Charge-Injection Dynamics in a Molecular Light Source

2022-04-05T17:41:05+02:00Tags: , , , , , |

Authors: Roslawska, Anna; Merino, Pablo; Leon, Christopher C.; Grewal, Abhishek; Etzkorn, Markus; Kuhnke, Klaus; Kern, Klaus Journal: NANO LETTERS Publication date: 2021/06/09 DOI: 10.1021/acs.nanolett.1c00328 Abstract: Light sources on the scale of single molecules can be addressed and characterized at their proper sub-nanometer scale by scanning tunneling microscopy-induced luminescence (STML). Such a source can be driven [...]

Atomic-Scale Structural Fluctuations of a Plasmonic Cavity

2022-04-05T17:40:59+02:00Tags: , , , , , |

Authors: Roslawska, Anna; Merino, Pablo; Grewal, Abhishek; Leon, Christopher C.; Kuhnke, Klaus; Kern, Klaus Journal: NANO LETTERS Publication date: 2021/09/08 DOI: 10.1021/acs.nanolett.1c02207 Abstract: Optical spectromicroscopies, which can reach atomic resolution due to plasmonic enhancement, are perturbed by spontaneous intensity modifications. Here, we study such fluctuations in plasmonic electroluminescence at the single-atom limit profiting from the [...]

Closed timelike curves and chronology protection in quantum and classical simulators

2021-02-12T10:08:13+01:00Tags: , , |

Authors: Martin-Vazquez, Gonzalo; Sabin, Carlos Contribution: Article Journal: CLASSICAL AND QUANTUM GRAVITY Publication date: 2020/02/20 DOI: 10.1088/1361-6382/ab5f3f Abstract: In principe, general relativity seems to allow the existence of closed timelike curves (CTC). However, when quantum effects are considered, it is likely that their existence is prevented by some kind of chronological protection mechanism, as Hawking conjectured. [...]

Origin of the Electron-Phonon Interaction of Topological Semimetal Surfaces Measured with Helium Atom Scattering

2021-02-12T10:08:12+01:00Tags: , , , , |

Authors: Benedek, Giorgio; Miret-Artes, Salvador; Manson, J. R.; Ruckhofer, Adrian; Ernst, Wolfgang E.; Tamtoegl, Anton Contribution: Article Journal: JOURNAL OF PHYSICAL CHEMISTRY LETTERS Publication date: 2020/03/05 DOI: 10.1021/acs.jpclett.9b03829 Abstract: He atom scattering has been demonstrated to be a sensitive probe of the electron-phonon interaction parameter lambda at metal and metal-overlayer surfaces. Here it is shown that [...]

The Electron-Phonon Interaction of Low-Dimensional and Multi-Dimensional Materials from He Atom Scattering

2021-02-12T10:08:07+01:00Tags: , , , , , |

Authors: Benedek, Giorgio; Manson, Joseph R.; Miret-Artes, Salvador Contribution: Article; Early Access Journal: ADVANCED MATERIALS Publication date: 2020/06/01 DOI: 10.1002/adma.202002072 Abstract: Atom scattering is becoming recognized as a sensitive probe of the electron-phonon interaction parameter lambda at metal and metal-overlayer surfaces. Here, the theory is developed, linking lambda to the thermal attenuation of atom scattering spectra [...]

From Molecular Aggregation to a One-Dimensional Quantum Crystal of Deuterium Inside a Carbon Nanotube of 1 nm Diameter

2021-02-12T10:08:03+01:00Tags: , , , , |

Authors: de Lara-Castells, Maria Pilar; Mitrushchenkov, Alexander O. Contribution: Article Journal: JOURNAL OF PHYSICAL CHEMISTRY LETTERS Publication date: 2020/07/02 DOI: 10.1021/acs.jpclett.0c01432 Abstract: The quantum motion of clusters of up to four deuterium molecules under confinement in a single-wall (1 nm diameter) carbon nanotube is investigated by applying a highly accurate full quantum treatment of the most [...]

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