The role of highly vibrationally excited H-2 initiating the nitrogen chemistry Quantum study and 3 sigma – detection of NH emission in the Orion Bar PDR

2022-08-31T20:22:00+02:00Tags: |

Authors: Goicoechea, Javier R.; Roncero, Octavio Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/08/31 DOI: 10.1051/0004-6361/202243884 Abstract: The formation of hydrides by gas-phase reactions between H-2 and a heavy element atom is a very selective process. Reactions with ground-state neutral carbon, oxygen, nitrogen, and sulfur atoms are very endoergic and have high energy barriers because the [...]

Extremely high spectral resolution measurements of the 450 mu m atmospheric window at Chajnantor with APEX

2022-08-24T20:22:00+02:00Tags: |

Authors: Pardo, J. R.; De Breuck, C.; Muders, D.; Gonzalez, J.; Montenegro-Montes, F. M.; Perez-Beaupuits, J. P.; Cernicharo, J.; Prigent, C.; Serabyn, E.; Mroczkowski, T.; Phillips, N. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/08/24 DOI: 10.1051/0004-6361/202243409 Abstract: Ground-based telescopes observing at millimeter (mm) and submillimeter (submm) wavelengths have to deal with a line-rich and highly [...]

Variational Determination of Multiqubit Geometrical Entanglement in Noisy Intermediate-Scale Quantum Computers

2022-08-17T20:22:00+02:00Tags: |

Authors: Munoz-Moller, A. D.; Pereira, L.; Zambrano, L.; Cortes-Vega, J.; Delgado, A. Journal: PHYSICAL REVIEW APPLIED Publication date: 2022/08/17 DOI: 10.1103/PhysRevApplied.18.024048 Abstract: Current noise levels in physical realizations of qubits and quantum operations limit the applicability of conventional methods to characterize entanglement. In this adverse scenario, we follow a quantum variational approach to estimate the [...]

QUANTUM COMPUTING Optimal simulation of quantum dynamics

2022-08-08T00:00:00+02:00Tags: |

Authors: Tagliacozzo, Luca Journal: NATURE PHYSICS Publication date: 2022/08/08 DOI: 10.1038/s41567-022-01696-8 Abstract: Tensor networks are mathematical structures that efficiently compress the data required to describe quantum systems. An algorithm for the optimal simulation of quantum dynamics based on tensor networks has now been implemented on a trapped-ion processor.

Observation of Transient Anions That Do Not Decay through Dissociative Electron Attachment: New Pathways for Radiosensitization

2022-09-19T15:57:01+02:00Tags: |

Authors: Lozano, Ana I.; Kossoski, Fabris; Blanco, Francisco; Limao-Vieira, Paulo; Varella, Marcio T. do N.; Garcia, Gustavo Journal: JOURNAL OF PHYSICAL CHEMISTRY LETTERS Publication date: 2022/08/04 DOI: 10.1021/acs.jpclett.2c01704 Abstract: Low-energy electrons (LEEs) can very efficiently induce bond breaking via dissociative electron attachment (DEA). While DEA is ubiquitous, the importance of other reactions initiated by LEEs [...]

Vibrational deactivation in O(P-3) + N-2 collisions: from an old problem towards its solution

2022-08-01T20:22:00+02:00Tags: |

Authors: Hong, Qizhen; Bartolomei, Massimiliano; Pirani, Fernando; Esposito, Fabrizio; Sun, Quanhua; Coletti, Cecilia Journal: PLASMA SOURCES SCIENCE & TECHNOLOGY Publication date: 2022/08/01 DOI: 10.1088/1361-6595/ac86f3 Abstract: In a recent communication [2021 Phys. Chem. Chem. Phys. 23 15475-79] we showed that the correct modelling of vibrational quenching events in O + N-2(v) collisions, a fundamental process in [...]

Sensing the ortho Positions in C6Cl6 and C6H4Cl2 from Cl-2(-) Formation upon Molecular Reduction

2022-08-01T20:22:00+02:00Tags: |

Authors: Kumar, Sarvesh; Romero, Jose; Probst, Michael; Maihom, Thana; Garcia, Gustavo; Limao-Vieira, Paulo Journal: MOLECULES Publication date: 2022/08/01 DOI: 10.3390/molecules27154820 Abstract: The geometrical effect of chlorine atom positions in polyatomic molecules after capturing a low-energy electron is shown to be a prevalent mechanism yielding Cl-2(-). In this work, we investigated hexachlorobenzene reduction in electron transfer [...]

Stochastic Bohmian and Scaled Trajectories

2022-08-01T20:22:00+02:00Tags: |

Authors: Mousavi, S. V.; Miret-Artes, S. Journal: FOUNDATIONS OF PHYSICS Publication date: 2022/08/01 DOI: 10.1007/s10701-022-00598-2 Abstract: In this review we deal with open (dissipative and stochastic) quantum systems within the Bohmian mechanics framework which has the advantage to provide a clear picture of quantum phenomena in terms of trajectories, originally in configuration space. The gradual [...]

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