Tim Langen
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timlangen.bsky.social
Tim Langen
@timlangen.bsky.social
350 followers 200 following 46 posts
Professor of quantum physics at TU Wien | Formerly @JILAscience & @unistuttgart. Fellow of @yacadeuro & @IQSTpress, editorial board at @NJPhysics, funding by @ERC_research.
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timlangen.bsky.social
phys.org/news/2025-10...
Simulations hint at new strongly correlated states of matter in ultracold polar molecules
Bose-Einstein condensates (BECs) are fascinating states of matter that emerge when atoms or molecules are cooled to extremely low temperatures just slightly above absolute zero (0 K). In 2023, physici...
phys.org
October 23, 2025 at 5:57 PM
timlangen.bsky.social
All codes and examples are available on our GitHub page: github.com/LangenGroup

Great work led by Felix Kogel!

#quantum | #coldmolecules
LangenGroup - Overview
Tim Langen's Cold Molecule and Quantum Technologies Lab at TU Wien, Austria - LangenGroup
github.com
October 21, 2025 at 1:30 AM
timlangen.bsky.social
Now published back-to-back in @apsphysics.bsky.social's Phys. Rev. A:

journals.aps.org/pra/abstract...
journals.aps.org/pra/abstract...
High-resolution spectroscopy of barium monofluoride: Odd isotopologues, hyperfine structure, and isotope shifts
Barium monofluoride (BaF) is a promising molecular species for precision tests of fundamental symmetries and interactions. We present a combined theoretical and experimental study of BaF spectra and i...
journals.aps.org
October 9, 2025 at 4:55 PM
timlangen.bsky.social
Now published in Phys. Rev. Lett.

journals.aps.org/prl/abstract...
Self-Bound Superfluid Membranes and Monolayer Crystals of Ultracold Polar Molecules
We investigate the physics of ultracold dipolar molecules using path-integral quantum Monte Carlo simulations, and construct the complete phase diagram extending from weak to strong interactions and f...
journals.aps.org
October 6, 2025 at 4:32 PM
timlangen.bsky.social
Inspiring discussions on nuclear symmetry breaking, #PrecisionMeasurements, and how #ColdMolecules can help probe #PhysicsBeyondTheStandardModel. Grateful to the organizers for bringing together such an excellent group of researchers.

Talks are online here: 🔗 esnt.cea.fr/Phocea/Page/...
Symmetry-violating nuclear properties
L'Espace de Structure et de réactions nucléaires théoriques est une entité sans chercheur permanent, financée conjointement par la DSM et la DAM dans le but de favoriser l'activité scientifique entre...
esnt.cea.fr
June 30, 2025 at 2:33 PM
timlangen.bsky.social
Check out the invited session P02 "Advances in cooling atoms and molecules" for our latest work on the laser cooling of complex #molecules!

schedule.aps.org/damop/2025/e...

#pacificnorthwest #volcanoes
Advances in Cooling Atoms and Molecules
America/Los_Angeles -- 10:30 am – 12:00 pm, Thursday June 19, Session P02, Oregon Convention Center, Portland Ballroom 251
schedule.aps.org
June 20, 2025 at 8:16 PM
timlangen.bsky.social
Two new preprints with colleagues from @rug.nl, @uchicagopsd.bsky.social and @jhu.edu

arxiv.org/pdf/2506.10940
arxiv.org/abs/2506.12972

#quantum | @tuwien.at
June 17, 2025 at 6:01 AM
timlangen.bsky.social
Now published in @apsphysics.bsky.social Phys. Rev. Research: journals.aps.org/prresearch/a...
Laser-cooled $^{137}\mathrm{BaF}$ molecules for measuring nuclear-spin-dependent parity violation
Many precision measurements with molecules require species that possess additional nuclear spin, but laser cooling such systems is challenging because of their complex hyperfine structure. This work d...
journals.aps.org
May 22, 2025 at 2:59 PM
timlangen.bsky.social
Now published in NJP: iopscience.iop.org/article/10.1...
Molecular laser cooling using serrodynes: implementation, characterization and prospects - IOPscienceSearch
Molecular laser cooling using serrodynes: implementation, characterization and prospects, Kogel, Felix, Garg, Tatsam, Rockenhäuser, Marian, Morales-Ramírez, Sebastián A, Langen, Tim
iopscience.iop.org
May 6, 2025 at 12:57 PM
timlangen.bsky.social
Das Ganze gibt es hier zum freien PDF Download, demnächst auch zusammen mit weiterführenden Video-Materialien:

physik-erkenntnisse-perspektiven.de

Es lassen sich dort auch kostenlose Printexemplare (z.B. für Schulen) bestellen.
Physik: Erkenntnisse und Perspektiven
physik-erkenntnisse-perspektiven.de
April 9, 2025 at 6:20 PM
timlangen.bsky.social
Thank you to everyone who joined, especially Rektor Jens Schneider.
April 6, 2025 at 7:56 AM
timlangen.bsky.social
Great collaboration with the group of Thomas Pohl within the Cluster of Excellence Quantum Science Austria at Technische Universität Wien! #quantum
Self-bound monolayer crystals of ultracold polar molecules
We investigate the physics of ultracold dipolar molecules using path-integral quantum Monte Carlo simulations, and construct the complete phase diagram extending from weak to strong interactions and f...
arxiv.org
April 4, 2025 at 4:06 AM
timlangen.bsky.social
Now published in @apsphysics.bsky.social Phys. Rev. Lett.

journals.aps.org/prl/abstract...
Dipolar Droplets of Strongly Interacting Molecules
We simulate a molecular Bose-Einstein condensate in the strongly dipolar regime, observing the existence of self-bound droplets, as well as their splitting into multiple droplets by confinement-induce...
journals.aps.org
February 4, 2025 at 9:15 PM