activity
20242026
most citedShake-down spectroscopy as state- and site-specific probe of ultrafast chemical dynamics

4 citations · 5 across the 6 of their papers we have counts for

collaborators

6 papers

physics.chem-ph2026

Different Environments in Quantum Statistical Mechanics: To or not to

Ellen T. Ekstrøm, Jacob Pedersen, Ida-Marie Høyvik

We piece together textbook material to re-derive the parameter entering reduced density operators from quantum statistical mechanics. By re-deriving , we show that the conte…

physics.chem-ph2026

The X-ray absorption spectrum of the propargyl radical, CH

Dorothee Schaffner, Theo Juncker von Buchwald, Jacob Pedersen +8

We report a combined experimental and computational study of the near-edge X-ray absorption fine structure (NEXAFS) spectrum of the propargyl radical, CH. As a cent…

physics.chem-ph2025★ 1 cited

eT 2.0: An efficient open-source molecular electronic structure program

Sarai Dery Folkestad, Eirik F. Kjønstad, Alexander C. Paul +34

The eT program is an open-source electronic structure program with emphasis on performance and modularity. As its name suggests, the program features extensive coupled cluster capa…

physics.chem-ph2025★ 4 cited

Shake-down spectroscopy as state- and site-specific probe of ultrafast chemical dynamics

Henry J. Thompson, Matteo Bonanomi, Jacob Pedersen +27

Tracking the multifarious ultrafast electronic and structural changes occurring in a molecule during a photochemical transformation is a challenging endeavor that benefits from rec…

physics.chem-ph2025

Quantum Statistical Mechanics of Electronically Open Molecules: Reduced Density Operators

Jacob Pedersen, Bendik Støa Sannes, Ida-Marie Høyvik

We present a reduced density operator for electronically open molecules by explicitly averaging over the environmental degrees of freedom of the composite Hamiltonian. Specifically…

physics.chem-ph2024

Deriving the Redfield equation for electronically open molecules

Bendik Stoa Sannes, Jacob Pedersen, Ida-Marie Hoyvik

We introduce a formalism to describe fractional charging of a molecule due to interactions with its environment. The interactions which induce fractional charging are contained in…