Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Skripnikov, Leonid"'
An efficient approach to calculate approximate pure-state and transition reduced density matrices in the framework of the multireference relativistic Fock-space coupled cluster (FS CC) theory is proposed. The method is based on the effective operator
Externí odkaz:
http://arxiv.org/abs/2408.12546
Autor:
Jackson, Sean, Kim, Luke, Biekert, Andreas, Nguyen, Alex, Mawhorter, Richard J, Sears, Trevor J., Skripnikov, Leonid V., Baturo, Vera V., Petrov, Alexander N., Grabow, Jens-Uwe
Observations of the rotational spectrum of lead monofluoride, PbF, have been extended up to transitions in the \textit{v} = 7 level for $^{208}$PbF in the lowest $X_1\,^2\Pi_{1/2}$ state of the radical and \textit{v} = 5 for the $^{207}$Pb and $^{206
Externí odkaz:
http://arxiv.org/abs/2406.01442
Autor:
Skripnikov, Leonid V., Prosnyak, Sergey D., Malyshev, Aleksei V., Athanasakis-Kaklamanakis, Michail, Brinson, Alex Jose, Minamisono, Kei, Cruz, Fabian C. Pastrana, Reilly, Jordan Ray, Rickey, Brooke J., Ruiz, Ronald. F. Garcia
Publikováno v:
Phys. Rev. A 110, 012807 (2024)
A method for calculating the field shift contribution to isotope shifts in many-electron atoms, incorporating quantum electrodynamics (QED) effects, is introduced. We also implement the model QED approach to incorporate QED contribution to the nuclea
Externí odkaz:
http://arxiv.org/abs/2404.13369
Publikováno v:
Phys. Rev. A 109, 042821 (2024)
The effects induced by the time-reversal ($\mathcal{T}$) and spatial parity ($\mathcal{P}$) violating electron-nucleus and electron-electron interactions mediated by the axion-like particles (ALPs) in the BaF molecule were estimated. Molecular parame
Externí odkaz:
http://arxiv.org/abs/2404.05065
Publikováno v:
Phys. Rev. C 109, 024315 (2024)
We revisited the electronic structure parameters used to interpret the hyperfine structure of neutral polonium. We used a computational scheme that treats relativistic and high-order electronic correlation effects within the coupled cluster with sing
Externí odkaz:
http://arxiv.org/abs/2311.00621
Publikováno v:
Phys. Rev. A 108, 053103 (2023)
We investigate the process of photon absorption by atoms or molecules shortly interacting with a laser beam in the dipole approximation. Assuming that the interaction time $\tau$ is much smaller than the lifetime of the corresponding excited state, w
Externí odkaz:
http://arxiv.org/abs/2310.14269
Autor:
König, Kristian, Berengut, Julian C., Borschevsky, Anastasia, Brinson, Alex, Brown, B. Alex, Dockery, Adam, Elhatisari, Serdar, Eliav, Ephraim, Ruiz, Ronald F. Garcia, Holt, Jason D., Hu, Bai-Shan, Karthein, Jonas, Lee, Dean, Ma, Yuan-Zhuo, Meißner, Ulf-G., Minamisono, Kei, Oleynichenko, Alexander V., Pineda, Skyy, Prosnyak, Sergey D., Reitsma, Marten L., Skripnikov, Leonid V., Vernon, Adam, Zaitsevski, Andrei
The nuclear charge radius of $^{32}$Si was determined using collinear laser spectroscopy. The experimental result was confronted with ab initio nuclear lattice effective field theory, valence-space in-medium similarity renormalization group, and mean
Externí odkaz:
http://arxiv.org/abs/2309.02037
The calculation of the parity-violating polarizations in the external electric field, which are associated with the electron electric dipole moment ($e$EDM) and magnetic quadrupole moment (MQM) of the $^{175}$Lu nucleus, as well as the determination
Externí odkaz:
http://arxiv.org/abs/2309.01680
Autor:
Skripnikov, Leonid V., Oleynichenko, Alexander V., Zaitsevskii, Andréi, Mosyagin, Nikolai S., Athanasakis-Kaklamanakis, Michail, Au, Mia, Neyens, Gerda
Relativistic coupled-cluster calculations of the ionization potential, dissociation energy, and excited electronic states under 35,000 cm$^{-1}$ are presented for the actinium monofluoride (AcF) molecule. The ionization potential is calculated to be
Externí odkaz:
http://arxiv.org/abs/2305.06932
Recently, upper bounds on the static time-reversal ($\mathcal{T}$) and spatial parity ($\mathcal{P}$)-violating electron electric dipole moment ($e$EDM) and dimensionless constant characterizing the strength of the $\mathcal{T}$,$\mathcal{P}$-violati
Externí odkaz:
http://arxiv.org/abs/2304.07164