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Peer-reviewed publications by IFF-CSIC researchers in 2022

Unconventional mechanism of virtual-state population through dissipation

2023-02-21T13:36:32+01:00Tags: , , |

Authors: Vivas-Viana, Alejandro; Gonzalez-Tudela, Alejandro; Sanchez Munoz, Carlos Journal: PHYSICAL REVIEW A Publication date: 2022/07/22 DOI: 10.1103/PhysRevA.106.012217 Abstract: Virtual states are a central concept in quantum mechanics. By definition, the probability of finding a quantum system in a virtual state should be vanishingly small at all times. In contrast to this notion, we report a [...]

Bridging the gap between topological non-Hermitian physics and open quantum systems

2023-02-21T13:36:31+01:00Tags: , , |

Authors: Gomez-Leon, Alvaro; Ramos, Tomas; Gonzalez-Tudela, Alejandro; Porras, Diego Journal: PHYSICAL REVIEW A Publication date: 2022/07/25 DOI: 10.1103/PhysRevA.106.L011501 Abstract: We relate observables in open quantum systems with the topology of non-Hermitian models using the Keldysh path-integral method. This allows to extract an effective Hamiltonian from the Green's function which contains all the relevant topological information [...]

Discovery of fulvenallene in TMC-1 with the QUIJOTE line survey

2023-02-21T13:36:30+01:00Tags: |

Authors: Cernicharo, J.; Fuentetaja, R.; Agundez, M.; Kaiser, R., I; Cabezas, C.; Marcelino, N.; Tercero, B.; Pardo, J. R.; de Vicente, P. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/07/27 DOI: 10.1051/0004-6361/202244399 Abstract: We report the detection of fulvenallene (c-C5H4CCH2) in the direction of TMC-1 with the QUIJOTE(1) line survey. Thirty rotational transitions with K-a = [...]

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

2023-02-21T13:36:29+01:00Tags: , |

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

2023-02-21T13:36:29+01:00Tags: , |

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 [...]

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

2023-02-21T13:36:28+01:00Tags: , , , , |

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

2023-02-21T13:36:28+01:00Tags: , |

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 [...]

Multiqudit interactions in molecular spins

2023-02-21T13:36:27+01:00Tags: , , |

Authors: Gomez-Leon, Alvaro Journal: PHYSICAL REVIEW A Publication date: 2022/08/15 DOI: 10.1103/PhysRevA.106.022609 Abstract: We study photon-mediated interactions between molecular spin qudits in the dispersive regime of operation. We derive from a microscopic model the effective interaction between molecular spins, including their crystal field anisotropy (i.e., the presence of nonlinear spin terms) and their multilevel structure. [...]

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

2023-02-21T13:36:27+01:00Tags: , |

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 [...]

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

2023-02-21T13:36:26+01:00Tags: |

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 [...]

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