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 This project (HAMP-vQED) has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 101019907) [01/10/2021-30/09/2026]//
+//* March 17 2026:// New publication: Ryan Benazzouk,Maen Salman and Trond Saue, //Wichmann-Kroll vacuum polarization density in a finite Gaussian basis set//, Phys. Rev. A **113** (2026)  032813 DOI:[[https://doi.org/10.1103/wbz7-czxx|10.1103/wbz7-czxx]]
+//* March 2 2026:// Gabriele starts a 3-year postdoc at the Norwegian University of Science and Technology in Trondheim, under the supervision of [[https://www.ntnu.edu/employees/ida-marie.hoyvik|Ida-Marie Høyvik]] and in the context of the [[https://cordis.europa.eu/project/id/101170817|OpenQuantum]] project. Good luck, Gabriele !
+{{ ::fabbro_ntnu2.jpeg?direct&400 |}}
+//* Feb 19 2026:// Dávid gave a seminar in the THEO-group entitled //Towards all-order self-energy computation for hydrogen molecular ions//.
+{{ ::david_theo2026.jpeg?direct&600 |}}
+//* Feb 10 2026:// Trond gave a presentation on relativistic effects in chemistry for a prospective session of the chemistry section of the French Academy of Science.
+{{ ::acadsci2026a.jpeg?direct&600 |}}
+{{ :acadsci2026b.jpeg?direct&600 |}}
+//* Feb 9 2026:// Ryan gave a seminar entitle //Vacuum polarization in a finite basis// at the Laboratoire de Chimie Théorique of Sorbonne université in Paris. This marked the beginning of a week of work with [[https://www.lct.jussieu.fr/pagesperso/toulouse/|Julien Toulouse]].
+{{ ::ryan_jussieu2026.jpg?direct&600 |}}
+//* Feb 5 2026:// New arXiv submission: Jan Brandejs, Trond Saue, Andre Severo Pereira Gomes, Lucas Visscher and Paolo Bientinesi: //Report on the second Toulouse Tensor Workshop// [[https://arxiv.org/abs/2602.05490|arXiv:2602.05490]]
+//* Jan 31 2026:// New arXiv submission: Gabriele Fabbro, Jan Brandejs and Trond Saue: //The nuclear electric quadrupole moment of 87Sr from highly accurate molecular relativistic calculations//, [[https://arxiv.org/abs/2602.00855|arXiv:2602.00855]]
+//* Jan 14 2026:// The TAPP whitepaper gets attention
+{{ ::hammond_on_tapp.png?direct&600 |}}
+//* Jan 12 2026:// New arXiv submission: Jan Brandejs, Niklas Hörnblad, Edward F. Valeev, Alexander Heinecke, Jeff Hammond, Devin Matthews and Paolo Bientinesi, //Tensor Algebra Processing Primitives (TAPP): Towards a Standard for Tensor Operations//, [[https://arxiv.org/abs/2601.07827|arXiv:2601.07827]]
+//* Jan 5 2026:// **New postdoc**
+<WRAP box>
+** Yuly Andrea Chamorro Mena ** \\
+Postdoc 05/01/2026 - 04/01/2028\\
+ORCID: [[https://orcid.org/0000-0002-4664-2434|0000-0002-4664-2434]]
+<WRAP column 200px>
+{{ ::photo-ychamorro.png?direct&600 |}}
+</WRAP>
+<WRAP column 400px>
+Yuly Chamorro, born 1990 in Pupiales, Colombia, obtained her PhD (entitled //Theory for symmetry violation experiments in molecules//) in physics at the University of Groningen, The Netherlands in 2024, under the supervision of [[https://www.rug.nl/staff/a.borschevsky/?lang=en|Anastasia Borschevsky]], [[https://www.rug.nl/staff/r.g.e.timmermans/?lang=en|R.G.E. Timmermans]] and [[https://english.tau.ac.il/profile/ephraim|E. Eliav]]. Her main task in the HAMP-vQED project will be to work on CC calculations of magnetic properties.
+</WRAP></WRAP>
+//* Dec 18 2025:// New arXiv submission: Ryan Benazzouk, Maen Salman, Trond Saue, //Wichmann-Kroll vacuum polarization density in a finite Gaussian basis set// [[https://arxiv.org/abs/2512.16569|arXiv:2512.16569]]
+//* Dec 5 2025:// Gabriele successfully defended his PhD today. **Congratulations !**  Below he is surrounded by the committee: Trond, [[https://www.uni-saarland.de/en/faculty/nt/chairs-groups/chairs/chemistry/prof-dr-stella-stopkowicz.html|Stella Stopkowicz]] (Saarland), [[https://pro.univ-lille.fr/andre-severo-pereira-gomes|André Severo Pereira Gomes]] (Lille), Gabriele, [[https://lpt.univ-tlse3.fr/fiche-annuaire/romaniello-pina/|Pina Romaniello]] (president; Toulouse) and [[https://www.uni-marburg.de/en/fb15/researchgroups/theoretical_chemistry/ag-berger/personal-pages/prof-dr-robert-berger|Robert Berger]] (Marburg)
+{{ ::dispgabriele.jpg?direct&600 |}}
+  *//Dec 1 2025:// Nice visit from our former group member Maen
+{{ ::visitmaen_dec2025.jpg?direct&600 |}}
+//* Nov 21 2025:// Trond gave TWO seminars in the Faculty of Physics, University of Physics, Warsaw. The first seminar (12h15) was entitled //Light-matter interaction in a relativistic perspective// ([[https://doi.org/10.5281/zenodo.19136006|pdf]]) . Host: Dominika Zgid.
+{{ ::saue_warsaw_1.jpg?direct&600 |}}
+The second seminar (14h15) was entitled //Vacuum polarization in a finite basis// ([[https://doi.org/10.5281/zenodo.19136094|pdf]]). Host: Krzysztof Pachucki
+{{ ::saue_warsaw_2.jpg?direct&600 |}}
+//* Nov 14 2025:// Trond gave a lecture entitled //Light-matter interaction in a relativistic perspective//
+([[https://doi.org/10.5281/zenodo.19135895|pdf]]) at The Department of Physical and Theoretical Chemistry, Comenius University in Bratislava. Host: [[https://www.respectprogram.org/michalrepisky.html|Michal Repisky]]
+{{ ::saue_bratislava2025.jpg?direct&600 |}}
+//* Nov 13 2025:// Trond gave a lecture entitled //Nuclear size effects in rovibrational spectra: A tale with a twist// ([[https://doi.org/10.5281/zenodo.19135713|pdf]]) for the Department of Chemistry at the [[https://en.wikipedia.org/wiki/E%C3%B6tv%C3%B6s_Lor%C3%A1nd_University|Eötvös Loránd University ]] in Budapest.
+{{ ::trond_budapest2025.jpeg?direct&600 |}}
+//* Nov 12 2025:// Trond is on an East European tour and gave a seminar entitled //Vacuum polarization in a finite basis// ([[https://doi.org/10.5281/zenodo.19135784|pdf]])  in the [[https://www.compchem.hu/|group of Edit Matyus]] in Budapest.
+{{ ::trond_matyus2025.jpg?direct&600 |}}
+//* Oct 16 2025:// Ryan gave a lecture entitled //Vacuum polarization in a Gaussian finite basis// at the THEO group meeting.
+{{ ::ryan_theo2025.jpg?direct&600 |}}
+//* Oct 7 - 8 2025:// Jan was invited to the NVIDIA Atomistic Simulation Summit 2025 in Santa Clara, California and contributed a poster entitled //Multi-node multi-GPU tensor contractions in higher-order coupled cluster//.
+//* Sep 29 - Oct 3 2025:// Trond has been co-organizing, with [[https://www.kth.se/profile/panor|Patrick Norman]] and [[https://en.uit.no/ansatte/person?p_document_id=41020|Kenneth Ruud]], the [[https://bit.ly/mrpss-2025|Molecular Response Properties Summer School (MRPSS 2025)]] at [[https://nordita.org/|Nordita]] in Stockholm.
+{{ ::mrpss25offphoto.jpg?direct&600 |}}
+//* Sep 17 2025:// The first day of the [[https://tensor.sciencesconf.org/|second Toulouse tensor workshop]] was a clear success.
+{{ ::tensor2025a.jpg?direct&600 |}}
+We have about 35 participants covering tensor library users and developers as well as industry.
+{{ ::tensor2025c.jpg?direct&600 |}}
+Breakout sessions
+{{ ::tensor2025d.jpg?direct&600 |}}
+Panel discussions
+* //Sep 16 2025// The HAMP group will host [[https://en.uit.no/ansatte/person?p_document_id=792319|Quntin Pitteloud]], PhD-student from The Arctic University of Norway (Tromsø) until Dec 19. Quentin works on relativistic quantum chemical calculations using multiwavelets.
+{{ ::quentin_arrival.jpg?direct&600 |}}
+* //Sep 4 2025//  //"...zum Raum wird hier die Zeit"//. Trond is teaching relativistic quantum chemistry at the [[https://mwm.dcci.unipi.it/|MWM summer school]] in Pisa, here with one of the organizers, Jürgen Gauss.
+{{ ::mwm2025rel.jpg?direct&600 |}}
+* //Aug 20 2025// Trond gave a plenary lecture entitled //Towards Highly Accurate Calculations of Molecular Properties// at the ACS Fall 2025 Global Virtual Symposium [[https://www.acs.org/events/fall/presenters/global-virtual-symposia/theoretical-methods-algorithms-applications.html|Development of Theoretical Methods, Algorithms and Applications to Relevant Chemical Problems]]
+*//July 22 2025// New publication: Trond Saue, //Does chemistry need more physics?//, Pure and Applied Chemistry, 2025 [[https://doi.org/10.1515/pac-2025-0497|DOI:10.1515/pac-2025-0497]]
 *//July 18 2025// New publication: Jan Brandejs, Johann Pototschnig and Trond Saue, //Generating Coupled Cluster Code for Modern Distributed-Memory Tensor Software//, The Journal of Chemical Theory and Computation (2025) Article ASAP [[https://doi.org/10.1021/acs.jctc.5c00219|DOI:10.1021/acs.jctc.5c00219]]
 {{ ::tenpi_toc.png?direct&600 |}}
+*//July 17 2025//Zewen Sun, PhD-student in the group of [[https://www.mpi-hd.mpg.de/mpi/de/forschung/abteilungen-und-gruppen/theoretische-quantendynamik-und-quantenelektrodynamik/exotic-quantum-systems|Natalia S. Oreshkina ]] at the Max Planck Institute for Nuclear Physics in Heidelberg, visited us for discussions.
+{{ ::sewen_july2025.jpg?direct&400 |}}
 *//July 11 2025// New publication: Gabriele Fabbro, Jan Brandejs and Trond Saue, //Highly Accurate Expectation Values Using High-Order Relativistic Coupled Cluster Theory//, The Journal of Physical Chemistry A (2025) Article ASAP [[https://doi.org/10.1021/acs.jpca.5c02844|DOI: 10.1021/acs.jpca.5c02844]]
@@ Line 13: / Line 103: @@
 {{ ::jan_poster_finland2025.png?direct&400 |}}
-* //June 23 2025// Trond gave a talk entitled //Towards Highly Accurate Calculations of Molecular Properties// at the [[https://watoc2025.no/|13th Triennial Congress of the World Association of Theoretical and Computational Chemists (WATOC)]] in Oslo.
+* //June 23 2025// Trond gave a talk entitled //Towards Highly Accurate Calculations of Molecular Properties// ([[https://doi.org/10.5281/zenodo.19135662|pdf]]) at the [[https://watoc2025.no/|13th Triennial Congress of the World Association of Theoretical and Computational Chemists (WATOC)]] in Oslo.
 {{ ::trond_watoc2025.jpg?direct&600 |}}
-* //June 19 2925// Trond gave a talk entitled //Molecular QED// at the conference [[https://mrchemsoft.no/nmqc-2025/|Numerical Methods in Quantum Chemistry 2025]], in Berlin.
+* //June 19 2025// Trond gave a talk entitled //Molecular QED// ([[https://doi.org/10.5281/zenodo.19135555|pdf]]) at the conference [[https://mrchemsoft.no/nmqc-2025/|Numerical Methods in Quantum Chemistry 2025]], in Berlin.
 {{ ::trond_nmqc2025.jpg?direct&600 |}}
@@ Line 22: / Line 112: @@
 {{ ::david_nbody2025.jpeg?direct&600 |}}
 {{ ::ryan_nbody2025.jpeg?direct&600 |}}
+* //June 11 2025// New arXiv submission: Per Sehlstedt, Jan Brandejs, Paolo Bientinesi and Lars Karlsson, //The Software Landscape for the Density Matrix Renormalization Group//, [[https://arxiv.org/abs/2506.12629|arXiv:2506.12629]] The paper was highlighted on [[http://quattro.phys.sci.kobe-u.ac.jp/dmrg/condmat.html|Tomotoshi Nishino's DMRG homepage]].
 * //June 11 2025// Gabriele gave a talk entitled //Highly Accurate Expectation Values using
@@ Line 27: / Line 120: @@
 {{ ::gabriele_trondheim2025.jpg?direct&600 |}}
-* //May 26 2025// Trond gave a talk entitled //QED for molecules// at the [[http://www.mqm2025.net/index.html|11th Molecular Quantum Mechanics Conference (MQM2025)]] in Kyoto. Below he is seen with Masahiro Ehara, Hiromi Nakai, Kizashi Yamaguchi, Hiroshi Nakatsuji, Kimihiko Hirao and Andreas Savin. Professors Nakatsuji and Hirao were honorees of the conference.
+* //June 5 2025// Jan gave a talk entitled //The case of TAPP and its use in DIRAC// at the 28th DIRAC Working Group Meeting 2025, SDU, Odense, DK
+{{ ::jan_dirac2025.jpeg?direct&600 |}}
+* //June 4 2025// Dávid gave a talk entitled //Towards rigorous QED corrections in diatomic molecules// at the 28th DIRAC Working Group Meeting 2025, SDU, Odense, DK
+{{ ::david_dirac2025.jpg?direct&600 |}}
+* //May 26 2025// Trond gave a talk entitled //QED for molecules// ([[https://doi.org/10.5281/zenodo.19135401|pdf]]) at the [[http://www.mqm2025.net/index.html|11th Molecular Quantum Mechanics Conference (MQM2025)]] in Kyoto. Below he is seen with Masahiro Ehara, Hiromi Nakai, Kizashi Yamaguchi, Hiroshi Nakatsuji, Kimihiko Hirao and Andreas Savin. Professors Nakatsuji and Hirao were honorees of the conference.
 {{ ::pxl_20250527_024629442_先生方集合写真4.jpg?direct&600 |}}
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 * //Oct 14 2024// New submission on arXiv: [[https://arxiv.org/abs/2410.08386|Beyond the Dailey-Townes model: chemical information from the electric field gradient]]. Authors: Gabriele, Johann and Trond
-* //Oct 14 2024// Trond gave a talk entitled //Beyond the Dailey-Townes model: chemical information from the electric field gradient// at the [[https://www.istcp2024.com/web/index.html|11th Triennial Congress of the International Society for Theoretical Chemical Physics]] (ISTCP2024) in Qingdao.
+* //Oct 14 2024// Trond gave a talk entitled //Beyond the Dailey-Townes model: chemical information from the electric field gradient// ([[https://doi.org/10.5281/zenodo.19133260|pdf]]) at the [[https://www.istcp2024.com/web/index.html|11th Triennial Congress of the International Society for Theoretical Chemical Physics]] (ISTCP2024) in Qingdao.
 {{ ::trond_istcp2024.jpg?direct&600 |}}
 * //Oct 10 2024// The HAMP team has been very present at the [[https://www.rehe2024.nl/|14th REHE conference]], held October 7 - 11 2024 in Amersfoort, the Netherlands. Talks:
-  * Trond: //Towards molecular QED//
+  * Trond: //Towards molecular QED  ([[https://doi.org/10.5281/zenodo.19135217|pdf]])//
   * Dávid: //Evaluation of the self-energy correction in a finite-basis approximation//
   * Ryan: //Vacuum polarization in a finite Gaussian basis//
@@ Line 129: / Line 228: @@
 {{ ::tensorc.jpg?direct&600 |}}
-* //May 2 2024:// Johann has joined the [[https://www.casus.science/research-areas/scientific-computing-core/|Scientific Computing Core team]] of the [[https://www.casus.science/casus/|Center for Advanced Systems Understanding]] (CASUS) in Görlitz, Germany, We wish him all the best !
+* //May 2 2024:// Johann has joined the [[https://www.casus.science/?page_id=4196|Scientific Computing Core team]] of the [[https://www.casus.science/|Center for Advanced Systems Understanding]] (CASUS) in Görlitz, Germany, We wish him all the best !
 {{ ::johann_goerlitz.jpeg?direct&600 |}}