Ida-Marie Høyvik's Avatar

Ida-Marie Høyvik

@idamaho

Associate Professor in Theoretical Chemistry at the Norwegian University of Science and Technology (NTNU)

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16.11.2024
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Latest posts by Ida-Marie Høyvik @idamaho

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A Reusable Library for Second-Order Orbital Optimization Using the Trust Region Method We present a reusable, open-source software implementation of the second-order trust region algorithm in the new OpenTrustRegion library. We apply the implementation to the general-purpose optimizatio...

New preprint online today - spearheaded by my very talented postdoc, Jonas - on a new reusable, open-source software implementation of the second-order trust region algorithm:

arxiv.org/abs/2509.13931

Here are some of the reasons why this library may be useful for a great many in our community. 👇

18.09.2025 07:24 👍 4 🔁 2 💬 1 📌 2

On my way to Toulouse for a fun workshop on «Emerging excited state methods in electronic-structure»🥳 Thanks to @titouloos.bsky.social for inviting me🌟 I’m very much looking forward to it!

07.04.2025 13:45 👍 2 🔁 0 💬 1 📌 0
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PhD Candidate in quantum chemistry (278574) | NTNU - Norwegian University of Science and Technology Job title: PhD Candidate in quantum chemistry (278574), Employer: NTNU - Norwegian University of Science and Technology, Deadline: Sunday, April 27, 2025

I have an open PhD position on the development of coupled cluster models for electronically open molecules🌟 Please share! #ERCCoG

www.jobbnorge.no/en/available...

03.04.2025 10:28 👍 4 🔁 2 💬 0 📌 0

😂🙈

13.02.2025 19:42 👍 0 🔁 0 💬 0 📌 0

I mean «poison someone», of course! Hard to kill anyone with zero concentration of poison🙈

13.02.2025 18:05 👍 1 🔁 0 💬 1 📌 0

“Don’t homeopathically kill someone” 😂 Priceless!

13.02.2025 18:01 👍 2 🔁 0 💬 1 📌 0
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Scientific institutions have a long history of anticipatory obedience Societies should learn from this and speak up to support inclusion

We should probably do better!
www.chemistryworld.com/opinion/scie...

08.02.2025 14:48 👍 1 🔁 0 💬 0 📌 0

A happy new year to you as well! Haha, heroic🙈🧐 Thanks, yes, crossing fingers for quick recovery! I need some of that «skele-grow» from Harry Potter😆

02.01.2025 16:15 👍 1 🔁 0 💬 0 📌 0

Thanks! Haha, heroic or stupid🙈

02.01.2025 16:05 👍 0 🔁 0 💬 0 📌 0
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When you go to the hospital on January 1st because you got hurt at 3am, people expect a good story…😬 However, I was just the idiot who ran down the stairs without glasses to make sure the crying toddler didn’t wake up the entire family💁🏼‍♀️

02.01.2025 08:47 👍 6 🔁 0 💬 2 📌 0

Happy New Year! We just created a new place to be here on this platform. More to come 🙂

01.01.2025 16:06 👍 4 🔁 1 💬 0 📌 0
The chemical structure of resiniferatoxin, drawn with TWSBI ECO fountain pens in a dark purple and dark gray inks.

The chemical structure of resiniferatoxin, drawn with TWSBI ECO fountain pens in a dark purple and dark gray inks.

Anyone up for some #ToxTuesday?
A lot of us love spicy foods, and the capsaicin in chili peppers that gives us that heat can be addictive. But is there anything hotter? I'm glad you asked. Yes, yes there is. And it's called RESINIFERATOXIN

17.12.2024 16:36 👍 84 🔁 39 💬 3 📌 3
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A Phase-Space Electronic Hamiltonian For Vibrational Circular Dichroism We show empirically that a phase-space non-Born–Oppenheimer electronic Hamiltonian approach to quantum chemistry (where the electronic Hamiltonian is parametrized by both nuclear position and momentum, ĤPS(R,P)) is both a practical and accurate means to recover vibrational circular dichroism spectra. We further hypothesize that such a phase-space approach may lead to very new dynamical physics beyond spectroscopic circular dichroism, with potential implications for understanding chiral induced spin selectivity (CISS), noting that classical phase-space approaches conserve the total nuclear plus electronic momentum, whereas classical Born–Oppenheimer approaches do not (they conserve only the nuclear momentum).

On my way home after a fantastic Löwdin Symposium in Uppsala🌟 Great people and fantastic science🤩 I’m probably late to the party, but I’m really excited to see the phase-space electronic Hamiltonian work by Subotnik&co 💎 pubs.acs.org/doi/abs/10.1...
#compchem

07.12.2024 14:34 👍 5 🔁 0 💬 0 📌 0

Last chance to apply for this exciting position in my group 😉

05.12.2024 11:23 👍 8 🔁 3 💬 0 📌 0
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Correlation in Dipeptide Systems form Quantum Information Theory Perspectives Understanding the electronic structure of amino acids is crucial for understanding protein structure and function. We interfaced quantum information indices and ab initio quantum chemistry methods to ...

Very happy to have this one in the open

doi.org/10.26434/che...

We found that mutual information measures are useful to identify spatial correlations in peptide systems, even at the Hartree-Fock or KS-DFT Slater Determinant level. Locality is a thing, as is chemical bonding. (1/2)

04.12.2024 13:37 👍 7 🔁 2 💬 3 📌 0

Correlation in Dipeptide Systems form Quantum Information Theory Perspectives

Authors: Mostafa Javaheri Moghadam, Katharina Boguslawski, Rayna Doucet, Örs Legeza, Paweł Tecmer, Stijn De Baerdemacker
DOI: 10.26434/chemrxiv-2024-2qs86

04.12.2024 09:18 👍 3 🔁 2 💬 0 📌 0
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#VISTAtalks on #CompChem 🧪
Wed 11 Dec
10:00 EST/ 16:00 Paris / 23:00 Beijing

* Christine Aikens, Kansas State Univ: TDDFT Studies of Electron Dynamics in Plasmonic Systems
* Victor Suarez, Georgia Inst Tech: Intermolecular Coulombic Decay in Water Dimers

quantum-dynamics-hub.github.io/VISTA/

05.12.2024 06:55 👍 11 🔁 2 💬 0 📌 0

So grateful to the ACS for having childcare at national meetings, so my daughter can come with. It makes a huge difference, especially when both parents are academics in overlapping fields (=go to same conferences).

05.12.2024 02:38 👍 53 🔁 13 💬 1 📌 1

I'm so excited to receive an ERC Consolidator Grant for my project, OpenQuantum!🥳 Thanks to my group, colleagues and collaborators for support ! #ERCCoG

03.12.2024 19:26 👍 14 🔁 2 💬 1 📌 0
A summary of the influence of non-covalent interactions on physical properties. It just covers the basics for undergraduates and looks at boiling point & solubility/miscibility.
It reinforces the idea that this is a scale - compounds aren't simply soluble or insoluble but can be slightly soluble.

A summary of the influence of non-covalent interactions on physical properties. It just covers the basics for undergraduates and looks at boiling point & solubility/miscibility. It reinforces the idea that this is a scale - compounds aren't simply soluble or insoluble but can be slightly soluble.

Another old #ChemEd #Chemistry #ChemSky 1 pg summary. It continues last week's non-covalent interactions & looks at boiling points & solubility/miscibility. It was aimed at 1st year non-chemists (most of my old students). But it reminds them that these properties are on a scale. Enjoy.

03.12.2024 08:09 👍 7 🔁 2 💬 2 📌 1

From the piece «Irreversibility» by Willis E. Lamb Jr in «Quantum statistical mechanics in the natural sciences».

03.12.2024 08:38 👍 0 🔁 0 💬 1 📌 0

I love reading «old» books!🌟 I found the best description of the laws of thermodynamics, written by Willis Lamb in 1973. They are as follows:
“1) You can’t win.
2) You can only break even at a temperatur of absolute zero.
3) Bets at absolute zero are not permitted”
#chemsky #compchem

03.12.2024 08:38 👍 3 🔁 1 💬 1 📌 0
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The FORmula TRANslating system is aging well.

Happy 70th birthday, Fortran! 🧪

02.12.2024 06:19 👍 87 🔁 15 💬 5 📌 3

Look who's here
@pnas.org ✔️
@science.org ✔️
@naturecellbiology.bsky.social ✔️
@natrevgenet.bsky.social ✔️
@naturebiotech.bsky.social ✔️
@naturemicrobiol.bsky.social ✔️
@naturechemistry.bsky.social ✔️
@genesdev.bsky.social ✔️
@cellchembiol.bsky.social ✔️
@genomeresearch.bsky.social ✔️
@jcellbiol.bsky.social ✔️

25.11.2024 13:48 👍 504 🔁 237 💬 34 📌 20

If you are in Uppsala on December 6, join the Lowdin Symposium! It’s free of charge and a full day of interesting lectures, organized by Roland Lindh👏🏻 I’m excited to talk about our wave function based density operators😃 #theochem #compchem
quantchem.weebly.com/the-2024-lou...

19.11.2024 08:03 👍 9 🔁 4 💬 0 📌 0

Yes, please!😃

19.11.2024 07:50 👍 1 🔁 0 💬 0 📌 0

Haha, but it has only been a month since you sent me the link!😅 From people told me I should go on twitter, it took me like five years to sign up🙈

16.11.2024 15:04 👍 3 🔁 0 💬 1 📌 0

Thanks!

16.11.2024 14:33 👍 1 🔁 0 💬 1 📌 0

I’m apparently susceptible to peer pressure, so I’m trying out bluesky🌟 Hope there are #compchem people here!

16.11.2024 13:53 👍 44 🔁 1 💬 4 📌 0